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Information Disclosure

other MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

How It Works

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security. This happens through multiple channels: verbose error messages that display stack traces revealing internal paths and frameworks, improperly secured debug endpoints left active in production, and misconfigured servers that expose directory listings or version control artifacts like .git folders. APIs often leak excessive data in responses—returning full user objects when only a name is needed, or revealing system internals through metadata fields.

Attackers exploit these exposures systematically. They probe for common sensitive files (.env, config.php, backup archives), trigger error conditions to extract framework details, and analyze response timing or content differences to enumerate valid usernames or resources. Even subtle variations—like "invalid password" versus "user not found"—enable account enumeration. Exposed configuration files frequently contain database credentials, API keys, or internal service URLs that unlock further attack vectors.

The attack flow typically starts with passive reconnaissance: examining HTTP headers, JavaScript bundles, and public endpoints for version information and architecture clues. Active probing follows—testing predictable paths, manipulating parameters to trigger exceptions, and comparing responses across similar requests to identify information leakage patterns.

Impact

  • Credential compromise: Exposed configuration files, hardcoded secrets in source code, or API keys enable direct authentication bypass
  • Attack surface mapping: Stack traces, framework versions, and internal paths help attackers craft targeted exploits for known vulnerabilities
  • Data breach: Direct exposure of user data, payment information, or proprietary business logic through oversharing APIs or accessible backups
  • Privilege escalation pathway: Internal URLs, service discovery information, and architecture details facilitate lateral movement and SSRF attacks
  • Compliance violations: GDPR, PCI-DSS, and HIPAA penalties for exposing regulated data through preventable disclosures

Real-World Examples

A major Git repository exposure affected thousands of websites when .git folders remained accessible on production servers, allowing attackers to reconstruct entire source code histories including deleted commits containing credentials. Tools like GitDumper automated mass exploitation of this misconfiguration.

Cloud storage misconfigurations have repeatedly exposed sensitive data when companies left S3 buckets or Azure Blob containers publicly readable. One incident exposed 150 million voter records because verbose API error messages revealed the storage URL structure, and no authentication was required.

Framework debug modes left enabled in production have caused numerous breaches. Django's DEBUG=True setting exposed complete stack traces with database queries and environment variables, while Laravel's debug pages revealed encryption keys through the APP_KEY variable in environment dumps.

Mitigation

  • Generic error pages: Return uniform error messages to users; log detailed exceptions server-side only
  • Disable debug modes: Enforce production configurations that suppress stack traces, verbose logging, and debug endpoints through deployment automation
  • Access control audits: Restrict or remove development artifacts (.git, backup files, phpinfo()) and internal endpoints before deployment
  • Response minimization: API responses should return only necessary fields; implement allowlists rather than blocklists for data exposure
  • Security headers: Deploy X-Content-Type-Options, remove server version banners, and disable directory indexing
  • Timing consistency: Ensure authentication and validation responses take uniform time regardless of input validity

Recent CVEs (67851)

EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

A use of externally-controlled format string vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to obtain secret data or modify memory. We have already fixed the vulnerability in the following versions: QTS 5.2.6.3195 build 20250715 and later QuTS hero h5.2.6.3195 build 20250715 and later

Qnap Information Disclosure Qts +1
NVD
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

A use of externally-controlled format string vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to obtain secret data or modify memory. We have already fixed the vulnerability in the following versions: QTS 5.2.6.3195 build 20250715 and later QuTS hero h5.2.6.3195 build 20250715 and later

Qnap Information Disclosure Quts Hero +1
NVD
EPSS 0% CVSS 6.5
MEDIUM This Month

A SQL injection vulnerability was discovered in the /articles endpoint of MyClub 0.5, affecting the query parameters Content, GroupName, PersonName, lastUpdate, pool, and title. Due to insufficient input sanitisation, an unauthenticated remote attacker could inject arbitrary SQL commands via a crafted GET request, potentially leading to information disclosure or manipulation of the database.

SQLi Information Disclosure
NVD GitHub
EPSS 0% CVSS 4.9
MEDIUM POC This Month

An information disclosure vulnerability has been discovered in SeaCMS 13.1. The vulnerability exists in the admin_safe.php component located in the /btcoan/ directory. This security flaw allows authenticated administrators to scan and download not only the application’s source code but also potentially any file accessible on the server’s root directory.

Information Disclosure PHP Seacms
NVD
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Auth bypass in RestroPress WordPress ordering plugin 3.0.0-3.1.9.2.

Authentication Bypass Information Disclosure WordPress +1
NVD
EPSS 0% CVSS 6.3
MEDIUM This Month

The Schema Plugin For Divi, Gutenberg & Shortcodes plugin for WordPress is vulnerable to Object Instantiation in all versions up to, and including, 4.3.2 via deserialization of untrusted input via the wpt_schema_breadcrumbs shortcode. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.

Deserialization Information Disclosure PHP +1
NVD
EPSS 1% CVSS 9.8
CRITICAL Act Now

LFI in JoomSport WordPress plugin.

LFI WordPress Information Disclosure +2
NVD
EPSS 0% CVSS 4.9
MEDIUM PATCH This Month

The LDAP 'Bind password' value cannot be read after saving, but a Super Admin account can leak it by changing LDAP 'Host' to a rogue LDAP server. To mitigate this, the 'Bind password' value is now reset on 'Host' change.

Information Disclosure Ubuntu Debian +2
NVD
EPSS 0% CVSS 3.8
LOW Monitor

A arbitrary file access vulnerability in Backup Bolt (CVSS 3.8). Remediation should follow standard vulnerability management procedures.

Information Disclosure WordPress
NVD
EPSS 0% CVSS 7.8
HIGH This Week

A security vulnerability in Installer of Panasonic AutoDownloader version 1.2.8 (CVSS 7.8). High severity vulnerability requiring prompt remediation.

Information Disclosure
NVD
Awaiting Data

Rejected reason: Further research determined the issue is not an open source vulnerability. No vendor patch available.

Information Disclosure
NVD
EPSS 0% CVSS 5.9
MEDIUM PATCH This Month

Cursor is a code editor built for programming with AI. In versions 1.6 and below, Mermaid (a to render diagrams) allows embedding images which then get rendered by Cursor in the chat box. An attacker can use this to exfiltrate sensitive information to a third-party attacker controlled server through an image fetch after successfully performing a prompt injection. A malicious model (or hallucination/backdoor) might also trigger this exploit at will. This issue requires prompt injection from malicious data (web, image upload, source code) in order to exploit. In that case, it can send sensitive information to an attacker-controlled external server. Some additional bypasses not covered in the initial fix to this issue were discovered, see GHSA-43wj-mwcc-x93p. This issue is fixed in version 1.7.

Information Disclosure Cursor
NVD GitHub
Awaiting Data

Rejected reason: Not used. No vendor patch available.

Information Disclosure
NVD
Awaiting Data

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. No vendor patch available.

Information Disclosure
NVD
EPSS 0% CVSS 7.5
HIGH POC PATCH This Week

WeGIA is an open source web manager with a focus on charitable institutions. Versions 3.4.12 and below contain a Broken Access Control vulnerability, identified in the get_relatorios_socios.php endpoint. This vulnerability allows unauthenticated attackers to directly access sensitive personal and financial information of members without requiring authentication or authorization. This issue is fixed in version 3.5.0.

Information Disclosure PHP Wegia
NVD GitHub
EPSS 0% CVSS 8.6
HIGH This Week

CVE-2025-10653 is a security vulnerability (CVSS 8.6) that allows access. High severity vulnerability requiring prompt remediation.

Information Disclosure
NVD
EPSS 0% CVSS 8.6
HIGH PATCH This Week

LangBot is a global IM bot platform designed for LLMs. In versions 4.1.0 up to but not including 4.3.5, authorized attackers can exploit the /api/v1/files/documents interface to perform arbitrary file uploads. Since this interface does not strictly restrict the storage directory of files on the server, it is possible to upload dangerous files to specific system directories. This is fixed in version 4.3.5.

Information Disclosure
NVD GitHub
EPSS 0% CVSS 7.1
HIGH POC PATCH This Week

CVE-2025-54315 is a security vulnerability (CVSS 7.1). High severity vulnerability requiring prompt remediation.

Information Disclosure
NVD GitHub
EPSS 0% CVSS 7.1
HIGH POC PATCH This Week

CVE-2025-49090 is a security vulnerability (CVSS 7.1). High severity vulnerability requiring prompt remediation.

Information Disclosure Suse
NVD GitHub
EPSS 0% CVSS 7.2
HIGH PATCH This Week

A security vulnerability in SSH Tectia Server before 6.6.6 sometimes (CVSS 7.2) that allows attackers. High severity vulnerability requiring prompt remediation.

Information Disclosure
NVD
EPSS 0% CVSS 7.5
HIGH POC This Week

Flock Safety Falcon and Sparrow License Plate Readers OPM1.171019.026 ship with development Wi-Fi credentials (test_flck) stored in cleartext in production firmware.

Information Disclosure License Plate Reader Firmware
NVD
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Hardcoded cryptographic key in Flock Safety DetectionProcessing app for ANPR. PoC available.

Information Disclosure Java Flock Safety +1
NVD
EPSS 0% CVSS 6.2
MEDIUM POC This Month

The Flock Safety Pisco com.flocksafety.android.pisco application 6.21.11 for Android (installed on Falcon and Sparrow License Plate Readers and Bravo Edge AI Compute Devices) has a cleartext Auth0 client secret in its codebase. Because application binaries can be trivially decompiled or inspected, attackers can recover this OAuth secret without special privileges. This secret is intended to remain confidential and should never be embedded directly in client-side software.

Information Disclosure Flock Safety Android
NVD
EPSS 0% CVSS 7.5
HIGH POC This Week

The Flock Safety Peripheral com.flocksafety.android.peripheral application 7.38.3 for Android (installed on Falcon and Sparrow License Plate Readers and Bravo Edge AI Compute Devices) contains a cleartext DataDog API key within in its codebase. Because application binaries can be trivially decompiled or inspected, attackers can recover the OAuth secret without special privileges. This secret is intended to remain confidential and should never be embedded directly in client-side software.

Information Disclosure Flock Safety Android
NVD
EPSS 3% CVSS 9.8
CRITICAL POC Act Now

Missing authentication in Flock Safety Collins Android app for ANPR cameras. EPSS 2.7%. PoC available.

Denial Of Service RCE Information Disclosure +2
NVD
EPSS 0% CVSS 5.5
MEDIUM POC This Month

CVE-2025-34210 is a security vulnerability (CVSS 5.5). Risk factors: public PoC available.

Information Disclosure Virtual Appliance Host Virtual Appliance Application
NVD
EPSS 0% CVSS 7.5
HIGH POC This Week

Vasion Print (formerly PrinterLogic) Virtual Appliance Host and Application (VA/SaaS deployments) store user passwords using unsalted SHA-512 hashes with a fall-back to unsalted SHA-1. The hashing is performed via PHP's `hash()` function in multiple files (server_write_requests_users.php, update_database.php, legacy/Login.php, tests/Unit/Api/IdpControllerTest.php). No per-user salt is used and the fast hash algorithms are unsuitable for password storage. An attacker who obtains the password database can recover cleartext passwords via offline dictionary or rainbow table attacks. The vulnerable code also contains logic that migrates legacy SHA-1 hashes to SHA-512 on login, further exposing users still on the old hash. This vulnerability was partially resolved, but still present within the legacy authentication platform.

Information Disclosure PHP Virtual Appliance Application +1
NVD
EPSS 0% CVSS 7.5
HIGH POC This Week

YOSHOP 2.0 allows unauthenticated information disclosure via comment-list API endpoints in the Goods module. The Comment model eagerly loads the related User model without field filtering; because User.php defines no $hidden or $visible attributes, sensitive fields (bcrypt password hash, mobile number, pay_money, expend_money.) are exposed in JSON responses. Route names vary per deployment (e.g. /api/goods.pinglun/list), but all call the same vulnerable model logic.

Information Disclosure PHP Firefly Mall
NVD GitHub
EPSS 0% CVSS 7.5
HIGH This Week

Vulnerability in the cryptographic algorithm of AndSoft's e-TMS v25.03, which uses MD5 to encrypt passwords. MD5 is a cryptographically vulnerable hash algorithm and is no longer considered secure for storing or transmitting passwords. It is vulnerable to collision attacks and can be easily cracked with modern hardware, exposing user credentials to potential risks.

Information Disclosure E Tms
NVD
EPSS 0% CVSS 5.1
MEDIUM This Month

A remote code execution vulnerability (CVSS 5.1) that allows browsers. Remediation should follow standard vulnerability management procedures.

Information Disclosure
NVD
EPSS 0% CVSS 8.0
HIGH PATCH This Week

A vulnerability has been identified within Rancher Manager whereby the SAML authentication from the Rancher CLI tool is vulnerable to phishing attacks. The custom authentication protocol for SAML-based providers can be abused to steal Rancher’s authentication tokens.

Information Disclosure Suse
NVD GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Files or Directories Accessible to External Parties vulnerability in Apache Kylin. You are fine as long as the Kylin's system and project admin access is well protected. This issue affects Apache Kylin: from 4.0.0 through 5.0.2. Users are recommended to upgrade to version 5.0.3, which fixes the issue.

Information Disclosure Path Traversal Apache +1
NVD GitHub
EPSS 0% CVSS 4.7
MEDIUM PATCH This Month

A vulnerability has been identified within Rancher Manager whereby `Impersonate-Extra-*` headers are being sent to an external entity, for example `amazonaws.com`, via the `/meta/proxy` Rancher endpoint. These headers may contain identifiable and/or sensitive information e.g. email addresses.

Information Disclosure Suse
NVD GitHub
EPSS 0% CVSS 5.3
MEDIUM POC PATCH This Month

Information disclosure in images API in Canonical LXD before 6.5 and 5.21.4 on all platforms allows unauthenticated remote attackers to determine project existence via differing HTTP status code responses.

Information Disclosure Debian Lxd +1
NVD GitHub
EPSS 0% CVSS 5.3
MEDIUM POC PATCH This Month

Information disclosure in image export API in Canonical LXD before 6.5 and 5.21.4 on Linux allows network attackers to determine project existence without authentication via crafted requests using wildcard fingerprints.

Information Disclosure Ubuntu Debian +2
NVD GitHub
EPSS 0% CVSS 8.7
HIGH This Week

Exposure of sensitive information in Viday. This vulnerability could allow an unauthenticated attacker to obtain sensitive information about customers by sending an HTTP GET request to “/api/reserva/web/clients” using the “phone” parameter.

Information Disclosure
NVD
EPSS 0% CVSS 7.8
HIGH This Week

VT STUDIO versions 8.53 and prior contain an out-of-bounds read vulnerability. If the product uses a specially crafted file, arbitrary code may be executed on the affected product.

Buffer Overflow Information Disclosure RCE +1
NVD
Awaiting Data

Rejected reason: Not used. No vendor patch available.

Information Disclosure
NVD
Awaiting Data

Rejected reason: Not used. No vendor patch available.

Information Disclosure
NVD
Awaiting Data

Rejected reason: Not used. No vendor patch available.

Information Disclosure
NVD
Awaiting Data

Rejected reason: Not used. No vendor patch available.

Information Disclosure
NVD
Awaiting Data

Rejected reason: Not used. No vendor patch available.

Information Disclosure
NVD
Awaiting Data

Rejected reason: Not used. No vendor patch available.

Information Disclosure
NVD
Awaiting Data

Rejected reason: Not used. No vendor patch available.

Information Disclosure
NVD
EPSS 0% CVSS 2.9
LOW PATCH Monitor

Poppler 24.06.1 through 25.x before 25.04.0 allows stack consumption and a SIGSEGV via deeply nested structures within the metadata (such as GTS_PDFEVersion) of a PDF document, e.g., a regular expression for a long pdfsubver string. This occurs in Dict::lookup, Catalog::getMetadata, and associated functions in PDFDoc, with deep recursion in the regex executor (std::__detail::_Executor).

Information Disclosure Ubuntu Debian
NVD GitHub
Awaiting Data

Rejected reason: This is a fork and is not in the Rust registry. No vendor patch available.

Information Disclosure
NVD
EPSS 0% CVSS 5.9
MEDIUM This Month

CVE-2023-49883 is a security vulnerability (CVSS 5.9). Remediation should follow standard vulnerability management procedures.

Information Disclosure IBM Transformation Extender Advanced
NVD
EPSS 0% CVSS 6.3
MEDIUM This Month

IBM Transformation Extender Advanced 10.0.1 does not invalidate session after logout which could allow an authenticated user to impersonate another user on the system.

Information Disclosure IBM Transformation Extender Advanced
NVD
EPSS 0% CVSS 1.9
LOW Monitor

IBM Transformation Extender Advanced 10.0.1 stores potentially sensitive information in log files that could be read by a local user.

Information Disclosure IBM
NVD
EPSS 0% CVSS 5.3
MEDIUM This Month

A security vulnerability in Kazaar 1.25.12 (CVSS 5.3) that allows a jwt with none. Remediation should follow standard vulnerability management procedures.

Information Disclosure
NVD GitHub
EPSS 0% CVSS 8.8
HIGH POC This Week

DigiSign DigiSigner ONE 1.0.4.60 allows DLL Hijacking.

Information Disclosure Digisigner One
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

CVE-2023-53530 is a security vulnerability (CVSS 5.5). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure Red Hat +2
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: Fix memory leak in rtw88_usb Kmemleak shows the following leak arising from routine in the usb probe routine: unreferenced object 0xffff895cb29bba00 (size 512): comm "(udev-worker)", pid 534, jiffies 4294903932 (age 102751.088s) hex dump (first 32 bytes): 77 30 30 30 00 00 00 00 02 2f 2d 2b 30 00 00 00 w000...../-+0... 02 00 2a 28 00 00 00 00 ff 55 ff ff ff 00 00 00 ..*(.....U...... backtrace: [<ffffffff9265fa36>] kmalloc_trace+0x26/0x90 [<ffffffffc17eec41>] rtw_usb_probe+0x2f1/0x680 [rtw_usb] [<ffffffffc03e19fd>] usb_probe_interface+0xdd/0x2e0 [usbcore] [<ffffffff92b4f2fe>] really_probe+0x18e/0x3d0 [<ffffffff92b4f5b8>] __driver_probe_device+0x78/0x160 [<ffffffff92b4f6bf>] driver_probe_device+0x1f/0x90 [<ffffffff92b4f8df>] __driver_attach+0xbf/0x1b0 [<ffffffff92b4d350>] bus_for_each_dev+0x70/0xc0 [<ffffffff92b4e51e>] bus_add_driver+0x10e/0x210 [<ffffffff92b50935>] driver_register+0x55/0xf0 [<ffffffffc03e0708>] usb_register_driver+0x88/0x140 [usbcore] [<ffffffff92401153>] do_one_initcall+0x43/0x210 [<ffffffff9254f42a>] do_init_module+0x4a/0x200 [<ffffffff92551d1c>] __do_sys_finit_module+0xac/0x120 [<ffffffff92ee6626>] do_syscall_64+0x56/0x80 [<ffffffff9300006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 The leak was verified to be real by unloading the driver, which resulted in a dangling pointer to the allocation. The allocated memory is freed in rtw_usb_intf_deinit().

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

CVE-2023-53528 is a security vulnerability (CVSS 5.5). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Fix memory leak in tb_handle_dp_bandwidth_request() The memory allocated in tb_queue_dp_bandwidth_request() needs to be released once the request is handled to avoid leaking it.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

CVE-2023-53526 is a security vulnerability (CVSS 5.5). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: RDMA/cma: Allow UD qp_type to join multicast only As for multicast: - The SIDR is the only mode that makes sense; - Besides PS_UDP, other port spaces like PS_IB is also allowed, as it is UD compatible. In this case qkey also needs to be set [1]. This patch allows only UD qp_type to join multicast, and set qkey to default if it's not set, to fix an uninit-value error: the ib->rec.qkey field is accessed without being initialized. ===================================================== BUG: KMSAN: uninit-value in cma_set_qkey drivers/infiniband/core/cma.c:510 [inline] BUG: KMSAN: uninit-value in cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570 cma_set_qkey drivers/infiniband/core/cma.c:510 [inline] cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570 cma_iboe_join_multicast drivers/infiniband/core/cma.c:4782 [inline] rdma_join_multicast+0x2b83/0x30a0 drivers/infiniband/core/cma.c:4814 ucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479 ucma_join_multicast+0x1e3/0x250 drivers/infiniband/core/ucma.c:1546 ucma_write+0x639/0x6d0 drivers/infiniband/core/ucma.c:1732 vfs_write+0x8ce/0x2030 fs/read_write.c:588 ksys_write+0x28c/0x520 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __ia32_sys_write+0xdb/0x120 fs/read_write.c:652 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline] __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Local variable ib.i created at: cma_iboe_join_multicast drivers/infiniband/core/cma.c:4737 [inline] rdma_join_multicast+0x586/0x30a0 drivers/infiniband/core/cma.c:4814 ucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479 CPU: 0 PID: 29874 Comm: syz-executor.3 Not tainted 5.16.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ===================================================== [1] https://lore.kernel.org/linux-rdma/20220117183832.GD84788@nvidia.com/

Linux Information Disclosure Google +1
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

CVE-2023-53522 is a security vulnerability (CVSS 7.8). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Linux Information Disclosure
NVD
EPSS 0% CVSS 7.1
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: scsi: ses: Fix slab-out-of-bounds in ses_intf_remove() A fix for: BUG: KASAN: slab-out-of-bounds in ses_intf_remove+0x23f/0x270 [ses] Read of size 8 at addr ffff88a10d32e5d8 by task rmmod/12013 When edev->components is zero, accessing edev->component[0] members is wrong.

Linux Information Disclosure Buffer Overflow
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-mem2mem: add lock to protect parameter num_rdy Getting below error when using KCSAN to check the driver. Adding lock to protect parameter num_rdy when getting the value with function: v4l2_m2m_num_src_bufs_ready/v4l2_m2m_num_dst_bufs_ready. kworker/u16:3: [name:report&]BUG: KCSAN: data-race in v4l2_m2m_buf_queue kworker/u16:3: [name:report&] kworker/u16:3: [name:report&]read-write to 0xffffff8105f35b94 of 1 bytes by task 20865 on cpu 7: kworker/u16:3:  v4l2_m2m_buf_queue+0xd8/0x10c

Linux Information Disclosure
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: PM / devfreq: Fix leak in devfreq_dev_release() srcu_init_notifier_head() allocates resources that need to be released with a srcu_cleanup_notifier_head() call. Reported by kmemleak.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: virtio-mmio: don't break lifecycle of vm_dev vm_dev has a separate lifecycle because it has a 'struct device' embedded. Thus, having a release callback for it is correct. Allocating the vm_dev struct with devres totally breaks this protection, though. Instead of waiting for the vm_dev release callback, the memory is freed when the platform_device is removed. Resulting in a use-after-free when finally the callback is to be called. To easily see the problem, compile the kernel with CONFIG_DEBUG_KOBJECT_RELEASE and unbind with sysfs. The fix is easy, don't use devres in this case. Found during my research about object lifetime problems.

Memory Corruption Use After Free Linux +1
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Fix memory leak of device names The device names allocated by dev_set_name() need be freed before module unloading, but they can not be freed because the kobject's refcount which was set in device_initialize() has not be decreased to 0. As comment of device_add() says, if it fails, use only put_device() drop the refcount, then the name will be freed in kobejct_cleanup(). device_del() and put_device() can be replaced with device_unregister(), so call it to unregister the added successfully devices, and just call put_device() to the not added device. Add a release() function to device to avoid null release() function WARNING in device_release(), it's empty, because the context devices are freed together in host1x_memory_context_list_free().

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: scsi: mpt3sas: Fix a memory leak Add a forgotten kfree().

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix fget leak when fs don't support nowait buffered read Heming reported a BUG when using io_uring doing link-cp on ocfs2. [1] Do the following steps can reproduce this BUG: mount -t ocfs2 /dev/vdc /mnt/ocfs2 cp testfile /mnt/ocfs2/ ./link-cp /mnt/ocfs2/testfile /mnt/ocfs2/testfile.1 umount /mnt/ocfs2 Then umount will fail, and it outputs: umount: /mnt/ocfs2: target is busy. While tracing umount, it blames mnt_get_count() not return as expected. Do a deep investigation for fget()/fput() on related code flow, I've finally found that fget() leaks since ocfs2 doesn't support nowait buffered read. io_issue_sqe |-io_assign_file // do fget() first |-io_read |-io_iter_do_read |-ocfs2_file_read_iter // return -EOPNOTSUPP |-kiocb_done |-io_rw_done |-__io_complete_rw_common // set REQ_F_REISSUE |-io_resubmit_prep |-io_req_prep_async // override req->file, leak happens This was introduced by commit a196c78b5443 in v5.18. Fix it by don't re-assign req->file if it has already been assigned. [1] https://lore.kernel.org/ocfs2-devel/ab580a75-91c8-d68a-3455-40361be1bfa8@linux.alibaba.com/T/#t

Linux Information Disclosure
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix handling of lrbp->cmd ufshcd_queuecommand() may be called two times in a row for a SCSI command before it is completed.

Linux Information Disclosure
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

CVE-2023-53509 is a security vulnerability (CVSS 5.5) that allows sleep. Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

CVE-2023-53508 is a security vulnerability (CVSS 7.8). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

CVE-2023-53507 is a security vulnerability (CVSS 7.8). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

CVE-2023-53506 is a security vulnerability (CVSS 7.8). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: clk: tegra: tegra124-emc: Fix potential memory leak The tegra and tegra needs to be freed in the error handling path, otherwise it will be leaked.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Properly order ib_device_unalloc() to avoid UAF ib_dealloc_device() should be called only after device cleanup. Fix the dealloc sequence.

Memory Corruption Use After Free Linux +6
NVD
EPSS 0% CVSS 4.7
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: iommu/amd/iommu_v2: Fix pasid_state refcount dec hit 0 warning on pasid unbind When unbinding pasid - a race condition exists vs outstanding page faults. To prevent this, the pasid_state object contains a refcount. * set to 1 on pasid bind * incremented on each ppr notification start * decremented on each ppr notification done * decremented on pasid unbind Since refcount_dec assumes that refcount will never reach 0: the current implementation causes the following to be invoked on pasid unbind: REFCOUNT_WARN("decrement hit 0; leaking memory") Fix this issue by changing refcount_dec to refcount_dec_and_test to explicitly handle refcount=1.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix slab-use-after-free in decode_session6 When the xfrm device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when the xfrm device sends IPv6 packets. The stack information is as follows: BUG: KASAN: slab-use-after-free in decode_session6+0x103f/0x1890 Read of size 1 at addr ffff8881111458ef by task swapper/3/0 CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.4.0-next-20230707 #409 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014 Call Trace: <IRQ> dump_stack_lvl+0xd9/0x150 print_address_description.constprop.0+0x2c/0x3c0 kasan_report+0x11d/0x130 decode_session6+0x103f/0x1890 __xfrm_decode_session+0x54/0xb0 xfrmi_xmit+0x173/0x1ca0 dev_hard_start_xmit+0x187/0x700 sch_direct_xmit+0x1a3/0xc30 __qdisc_run+0x510/0x17a0 __dev_queue_xmit+0x2215/0x3b10 neigh_connected_output+0x3c2/0x550 ip6_finish_output2+0x55a/0x1550 ip6_finish_output+0x6b9/0x1270 ip6_output+0x1f1/0x540 ndisc_send_skb+0xa63/0x1890 ndisc_send_rs+0x132/0x6f0 addrconf_rs_timer+0x3f1/0x870 call_timer_fn+0x1a0/0x580 expire_timers+0x29b/0x4b0 run_timer_softirq+0x326/0x910 __do_softirq+0x1d4/0x905 irq_exit_rcu+0xb7/0x120 sysvec_apic_timer_interrupt+0x97/0xc0 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:intel_idle_hlt+0x23/0x30 Code: 1f 84 00 00 00 00 00 f3 0f 1e fa 41 54 41 89 d4 0f 1f 44 00 00 66 90 0f 1f 44 00 00 0f 00 2d c4 9f ab 00 0f 1f 44 00 00 fb f4 <fa> 44 89 e0 41 5c c3 66 0f 1f 44 00 00 f3 0f 1e fa 41 54 41 89 d4 RSP: 0018:ffffc90000197d78 EFLAGS: 00000246 RAX: 00000000000a83c3 RBX: ffffe8ffffd09c50 RCX: ffffffff8a22d8e5 RDX: 0000000000000001 RSI: ffffffff8d3f8080 RDI: ffffe8ffffd09c50 RBP: ffffffff8d3f8080 R08: 0000000000000001 R09: ffffed1026ba6d9d R10: ffff888135d36ceb R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff8d3f8100 R14: 0000000000000001 R15: 0000000000000000 cpuidle_enter_state+0xd3/0x6f0 cpuidle_enter+0x4e/0xa0 do_idle+0x2fe/0x3c0 cpu_startup_entry+0x18/0x20 start_secondary+0x200/0x290 secondary_startup_64_no_verify+0x167/0x16b </TASK> Allocated by task 939: kasan_save_stack+0x22/0x40 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x7f/0x90 kmem_cache_alloc_node+0x1cd/0x410 kmalloc_reserve+0x165/0x270 __alloc_skb+0x129/0x330 inet6_ifa_notify+0x118/0x230 __ipv6_ifa_notify+0x177/0xbe0 addrconf_dad_completed+0x133/0xe00 addrconf_dad_work+0x764/0x1390 process_one_work+0xa32/0x16f0 worker_thread+0x67d/0x10c0 kthread+0x344/0x440 ret_from_fork+0x1f/0x30 The buggy address belongs to the object at ffff888111145800 which belongs to the cache skbuff_small_head of size 640 The buggy address is located 239 bytes inside of freed 640-byte region [ffff888111145800, ffff888111145a80) As commit f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") showed, xfrm_decode_session was originally intended only for the receive path. IP6CB(skb)->nhoff is not set during transmission. Therefore, set the cb field in the skb to 0 before sending packets.

Memory Corruption Use After Free Linux +6
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

CVE-2023-53499 is a security vulnerability (CVSS 5.5). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A remote code execution vulnerability (CVSS 5.5) that allows it. Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: crypto: xts - Handle EBUSY correctly As it is xts only handles the special return value of EINPROGRESS, which means that in all other cases it will free data related to the request. However, as the caller of xts may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.

Memory Corruption Use After Free Linux +6
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

CVE-2023-53492 is a security vulnerability (CVSS 7.8). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. syzkaller reported [0] memory leaks of an UDP socket and ZEROCOPY skbs. We can reproduce the problem with these sequences: sk = socket(AF_INET, SOCK_DGRAM, 0) sk.setsockopt(SOL_SOCKET, SO_TIMESTAMPING, SOF_TIMESTAMPING_TX_SOFTWARE) sk.setsockopt(SOL_SOCKET, SO_ZEROCOPY, 1) sk.sendto(b'', MSG_ZEROCOPY, ('127.0.0.1', 53)) sk.close() sendmsg() calls msg_zerocopy_alloc(), which allocates a skb, sets skb->cb->ubuf.refcnt to 1, and calls sock_hold(). Here, struct ubuf_info_msgzc indirectly holds a refcnt of the socket. When the skb is sent, __skb_tstamp_tx() clones it and puts the clone into the socket's error queue with the TX timestamp. When the original skb is received locally, skb_copy_ubufs() calls skb_unclone(), and pskb_expand_head() increments skb->cb->ubuf.refcnt. This additional count is decremented while freeing the skb, but struct ubuf_info_msgzc still has a refcnt, so __msg_zerocopy_callback() is not called. The last refcnt is not released unless we retrieve the TX timestamped skb by recvmsg(). Since we clear the error queue in inet_sock_destruct() after the socket's refcnt reaches 0, there is a circular dependency. If we close() the socket holding such skbs, we never call sock_put() and leak the count, sk, and skb. TCP has the same problem, and commit e0c8bccd40fc ("net: stream: purge sk_error_queue in sk_stream_kill_queues()") tried to fix it by calling skb_queue_purge() during close(). However, there is a small chance that skb queued in a qdisc or device could be put into the error queue after the skb_queue_purge() call. In __skb_tstamp_tx(), the cloned skb should not have a reference to the ubuf to remove the circular dependency, but skb_clone() does not call skb_copy_ubufs() for zerocopy skb. So, we need to call skb_orphan_frags_rx() for the cloned skb to call skb_copy_ubufs(). [0]: BUG: memory leak unreferenced object 0xffff88800c6d2d00 (size 1152): comm "syz-executor392", pid 264, jiffies 4294785440 (age 13.044s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 cd af e8 81 00 00 00 00 ................ 02 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00 ...@............ backtrace: [<0000000055636812>] sk_prot_alloc+0x64/0x2a0 net/core/sock.c:2024 [<0000000054d77b7a>] sk_alloc+0x3b/0x800 net/core/sock.c:2083 [<0000000066f3c7e0>] inet_create net/ipv4/af_inet.c:319 [inline] [<0000000066f3c7e0>] inet_create+0x31e/0xe40 net/ipv4/af_inet.c:245 [<000000009b83af97>] __sock_create+0x2ab/0x550 net/socket.c:1515 [<00000000b9b11231>] sock_create net/socket.c:1566 [inline] [<00000000b9b11231>] __sys_socket_create net/socket.c:1603 [inline] [<00000000b9b11231>] __sys_socket_create net/socket.c:1588 [inline] [<00000000b9b11231>] __sys_socket+0x138/0x250 net/socket.c:1636 [<000000004fb45142>] __do_sys_socket net/socket.c:1649 [inline] [<000000004fb45142>] __se_sys_socket net/socket.c:1647 [inline] [<000000004fb45142>] __x64_sys_socket+0x73/0xb0 net/socket.c:1647 [<0000000066999e0e>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<0000000066999e0e>] do_syscall_64+0x38/0x90 arch/x86/entry/common.c:80 [<0000000017f238c1>] entry_SYSCALL_64_after_hwframe+0x63/0xcd BUG: memory leak unreferenced object 0xffff888017633a00 (size 240): comm "syz-executor392", pid 264, jiffies 4294785440 (age 13.044s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 2d 6d 0c 80 88 ff ff .........-m..... backtrace: [<000000002b1c4368>] __alloc_skb+0x229/0x320 net/core/skbuff.c:497 [<00000000143579a6>] alloc_skb include/linux/skbuff.h:1265 [inline] [<00000000143579a6>] sock_omalloc+0xaa/0x190 net/core/sock.c:2596 [<00000000be626478>] msg_zerocopy_alloc net/core/skbuff.c:1294 [inline] [<00000000be626478>] ---truncated---

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

CVE-2023-53488 is a security vulnerability (CVSS 5.5). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

CVE-2023-53487 is a security vulnerability (CVSS 7.8) that allows user copy. High severity vulnerability requiring prompt remediation. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 7.1
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Enhance the attribute size check This combines the overflow and boundary check so that all attribute size will be properly examined while enumerating them. [ 169.181521] BUG: KASAN: slab-out-of-bounds in run_unpack+0x2e3/0x570 [ 169.183161] Read of size 1 at addr ffff8880094b6240 by task mount/247 [ 169.184046] [ 169.184925] CPU: 0 PID: 247 Comm: mount Not tainted 6.0.0-rc7+ #3 [ 169.185908] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [ 169.187066] Call Trace: [ 169.187492] <TASK> [ 169.188049] dump_stack_lvl+0x49/0x63 [ 169.188495] print_report.cold+0xf5/0x689 [ 169.188964] ? run_unpack+0x2e3/0x570 [ 169.189331] kasan_report+0xa7/0x130 [ 169.189714] ? run_unpack+0x2e3/0x570 [ 169.190079] __asan_load1+0x51/0x60 [ 169.190634] run_unpack+0x2e3/0x570 [ 169.191290] ? run_pack+0x840/0x840 [ 169.191569] ? run_lookup_entry+0xb3/0x1f0 [ 169.192443] ? mi_enum_attr+0x20a/0x230 [ 169.192886] run_unpack_ex+0xad/0x3e0 [ 169.193276] ? run_unpack+0x570/0x570 [ 169.193557] ? ni_load_mi+0x80/0x80 [ 169.193889] ? debug_smp_processor_id+0x17/0x20 [ 169.194236] ? mi_init+0x4a/0x70 [ 169.194496] attr_load_runs_vcn+0x166/0x1c0 [ 169.194851] ? attr_data_write_resident+0x250/0x250 [ 169.195188] mi_read+0x133/0x2c0 [ 169.195481] ntfs_iget5+0x277/0x1780 [ 169.196017] ? call_rcu+0x1c7/0x330 [ 169.196392] ? ntfs_get_block_bmap+0x70/0x70 [ 169.196708] ? evict+0x223/0x280 [ 169.197014] ? __kmalloc+0x33/0x540 [ 169.197305] ? wnd_init+0x15b/0x1b0 [ 169.197599] ntfs_fill_super+0x1026/0x1ba0 [ 169.197994] ? put_ntfs+0x1d0/0x1d0 [ 169.198299] ? vsprintf+0x20/0x20 [ 169.198583] ? mutex_unlock+0x81/0xd0 [ 169.198930] ? set_blocksize+0x95/0x150 [ 169.199269] get_tree_bdev+0x232/0x370 [ 169.199750] ? put_ntfs+0x1d0/0x1d0 [ 169.200094] ntfs_fs_get_tree+0x15/0x20 [ 169.200431] vfs_get_tree+0x4c/0x130 [ 169.200714] path_mount+0x654/0xfe0 [ 169.201067] ? putname+0x80/0xa0 [ 169.201358] ? finish_automount+0x2e0/0x2e0 [ 169.201965] ? putname+0x80/0xa0 [ 169.202445] ? kmem_cache_free+0x1c4/0x440 [ 169.203075] ? putname+0x80/0xa0 [ 169.203414] do_mount+0xd6/0xf0 [ 169.203719] ? path_mount+0xfe0/0xfe0 [ 169.203977] ? __kasan_check_write+0x14/0x20 [ 169.204382] __x64_sys_mount+0xca/0x110 [ 169.204711] do_syscall_64+0x3b/0x90 [ 169.205059] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 169.205571] RIP: 0033:0x7f67a80e948a [ 169.206327] Code: 48 8b 0d 11 fa 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 008 [ 169.208296] RSP: 002b:00007ffddf020f58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 169.209253] RAX: ffffffffffffffda RBX: 000055e2547a6060 RCX: 00007f67a80e948a [ 169.209777] RDX: 000055e2547a6260 RSI: 000055e2547a62e0 RDI: 000055e2547aeaf0 [ 169.210342] RBP: 0000000000000000 R08: 000055e2547a6280 R09: 0000000000000020 [ 169.210843] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 000055e2547aeaf0 [ 169.211307] R13: 000055e2547a6260 R14: 0000000000000000 R15: 00000000ffffffff [ 169.211913] </TASK> [ 169.212304] [ 169.212680] Allocated by task 0: [ 169.212963] (stack is not available) [ 169.213200] [ 169.213472] The buggy address belongs to the object at ffff8880094b5e00 [ 169.213472] which belongs to the cache UDP of size 1152 [ 169.214095] The buggy address is located 1088 bytes inside of [ 169.214095] 1152-byte region [ffff8880094b5e00, ffff8880094b6280) [ 169.214639] [ 169.215004] The buggy address belongs to the physical page: [ 169.215766] page:000000002e324c8c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x94b4 [ 169.218412] head:000000002e324c8c order:2 compound_mapcount:0 compound_pincount:0 [ 169.219078] flags: 0xfffffc0010200(slab|head|node=0|zone=1|lastcpupid=0x1fffff) [ 169.220272] raw: 000fffffc0010200 ---truncated---

Linux Information Disclosure Buffer Overflow +5
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

CVE-2023-53482 is a security vulnerability (CVSS 5.5). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In the Linux kernel, the following vulnerability has been resolved: cxl/acpi: Fix a use-after-free in cxl_parse_cfmws() KASAN and KFENCE detected an user-after-free in the CXL driver. This happens in the cxl_decoder_add() fail path. KASAN prints the following error: BUG: KASAN: slab-use-after-free in cxl_parse_cfmws (drivers/cxl/acpi.c:299) This happens in cxl_parse_cfmws(), where put_device() is called, releasing cxld, which is accessed later. Use the local variables in the dev_err() instead of pointing to the released memory. Since the dev_err() is printing a resource, change the open coded print format to use the %pr format specifier.

Memory Corruption Use After Free Linux +6
NVD
EPSS 0% CVSS 4.7
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: tracing/synthetic: Fix races on freeing last_cmd Currently, the "last_cmd" variable can be accessed by multiple processes asynchronously when multiple users manipulate synthetic_events node at the same time, it could lead to use-after-free or double-free. This patch add "lastcmd_mutex" to prevent "last_cmd" from being accessed asynchronously. ================================================================ It's easy to reproduce in the KASAN environment by running the two scripts below in different shells. script 1: while : do echo -n -e '\x88' > /sys/kernel/tracing/synthetic_events done script 2: while : do echo -n -e '\xb0' > /sys/kernel/tracing/synthetic_events done ================================================================ double-free scenario: process A process B ------------------- --------------- 1.kstrdup last_cmd 2.free last_cmd 3.free last_cmd(double-free) ================================================================ use-after-free scenario: process A process B ------------------- --------------- 1.kstrdup last_cmd 2.free last_cmd 3.tracing_log_err(use-after-free) ================================================================ Appendix 1. KASAN report double-free: BUG: KASAN: double-free in kfree+0xdc/0x1d4 Free of addr ***** by task sh/4879 Call trace: ... kfree+0xdc/0x1d4 create_or_delete_synth_event+0x60/0x1e8 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... Allocated by task 4879: ... kstrdup+0x5c/0x98 create_or_delete_synth_event+0x6c/0x1e8 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... Freed by task 5464: ... kfree+0xdc/0x1d4 create_or_delete_synth_event+0x60/0x1e8 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... ================================================================ Appendix 2. KASAN report use-after-free: BUG: KASAN: use-after-free in strlen+0x5c/0x7c Read of size 1 at addr ***** by task sh/5483 sh: CPU: 7 PID: 5483 Comm: sh ... __asan_report_load1_noabort+0x34/0x44 strlen+0x5c/0x7c tracing_log_err+0x60/0x444 create_or_delete_synth_event+0xc4/0x204 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... Allocated by task 5483: ... kstrdup+0x5c/0x98 create_or_delete_synth_event+0x80/0x204 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... Freed by task 5480: ... kfree+0xdc/0x1d4 create_or_delete_synth_event+0x74/0x204 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ...

Information Disclosure Linux Race Condition +5
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

CVE-2023-53477 is a security vulnerability (CVSS 5.5). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

CVE-2023-53475 is a security vulnerability (CVSS 5.5). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

CVE-2023-53473 is a security vulnerability (CVSS 7.8). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

CVE-2023-53471 is a security vulnerability (CVSS 7.8). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Linux Information Disclosure Ubuntu +4
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix memory leak in alloc_wbufs() kmemleak reported a sequence of memory leaks, and show them as following: unreferenced object 0xffff8881575f8400 (size 1024): comm "mount", pid 19625, jiffies 4297119604 (age 20.383s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff8176cecd>] __kmalloc+0x4d/0x150 [<ffffffffa0406b2b>] ubifs_mount+0x307b/0x7170 [ubifs] [<ffffffff819fa8fd>] legacy_get_tree+0xed/0x1d0 [<ffffffff81936f2d>] vfs_get_tree+0x7d/0x230 [<ffffffff819b2bd4>] path_mount+0xdd4/0x17b0 [<ffffffff819b37aa>] __x64_sys_mount+0x1fa/0x270 [<ffffffff83c14295>] do_syscall_64+0x35/0x80 [<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 unreferenced object 0xffff8881798a6e00 (size 512): comm "mount", pid 19677, jiffies 4297121912 (age 37.816s) hex dump (first 32 bytes): 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk backtrace: [<ffffffff8176cecd>] __kmalloc+0x4d/0x150 [<ffffffffa0418342>] ubifs_wbuf_init+0x52/0x480 [ubifs] [<ffffffffa0406ca5>] ubifs_mount+0x31f5/0x7170 [ubifs] [<ffffffff819fa8fd>] legacy_get_tree+0xed/0x1d0 [<ffffffff81936f2d>] vfs_get_tree+0x7d/0x230 [<ffffffff819b2bd4>] path_mount+0xdd4/0x17b0 [<ffffffff819b37aa>] __x64_sys_mount+0x1fa/0x270 [<ffffffff83c14295>] do_syscall_64+0x35/0x80 [<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 The problem is that the ubifs_wbuf_init() returns an error in the loop which in the alloc_wbufs(), then the wbuf->buf and wbuf->inodes that were successfully alloced before are not freed. Fix it by adding error hanging path in alloc_wbufs() which frees the memory alloced before when ubifs_wbuf_init() returns an error.

Linux Information Disclosure Ubuntu +4
NVD
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