Use After Free

In the Linux kernel, the following vulnerability has been resolved: bcache: fix cached_dev.sb_bio use-after-free and crash In our production environment, we have received multiple crash reports regarding libceph, which have caught our attention: ``` [6888366.280350] Call Trace: [6888366.280452] blk_update_request+0x14e/0x370 [6888366.280561] blk_mq_end_request+0x1a/0x130 [6888366.280671] rbd_img_handle_request+0x1a0/0x1b0 [rbd] [6888366.280792] rbd_obj_handle_request+0x32/0x40 [rbd] [6888366.280903] __complete_request+0x22/0x70 [libceph] [6888366.281032] osd_dispatch+0x15e/0xb40 [libceph] [6888366.281164] ? inet_recvmsg+0x5b/0xd0 [6888366.281272] ? ceph_tcp_recvmsg+0x6f/0xa0 [libceph] [6888366.281405] ceph_con_process_message+0x79/0x140 [libceph] [6888366.281534] ceph_con_v1_try_read+0x5d7/0xf30 [libceph] [6888366.281661] ceph_con_workfn+0x329/0x680 [libceph] ``` After analyzing the coredump file, we found that the address of dc->sb_bio has been freed. We know that cached_dev is only freed when it is stopped. Since sb_bio is a part of struct cached_dev, rather than an alloc every time. If the device is stopped while writing to the superblock, the released address will be accessed at endio. This patch hopes to wait for sb_write to complete in cached_dev_free. It should be noted that we analyzed the cause of the problem, then tell all details to the QWEN and adopted the modifications it made.

In the Linux kernel, the following vulnerability has been resolved: media: as102: fix to not free memory after the device is registered in as102_usb_probe() In as102_usb driver, the following race condition occurs: ``` CPU0 CPU1 as102_usb_probe() kzalloc(); // alloc as102_dev_t .... usb_register_dev(); fd = sys_open("/path/to/dev"); // open as102 fd .... usb_deregister_dev(); .... kfree(); // free as102_dev_t .... sys_close(fd); as102_release() // UAF!! as102_usb_release() kfree(); // DFB!! ``` When a USB character device registered with usb_register_dev() is later unregistered (via usb_deregister_dev() or disconnect), the device node is removed so new open() calls fail. However, file descriptors that are already open do not go away immediately: they remain valid until the last reference is dropped and the driver's .release() is invoked. In as102, as102_usb_probe() calls usb_register_dev() and then, on an error path, does usb_deregister_dev() and frees as102_dev_t right away. If userspace raced a successful open() before the deregistration, that open FD will later hit as102_release() --> as102_usb_release() and access or free as102_dev_t again, occur a race to use-after-free and double-free vuln. The fix is to never kfree(as102_dev_t) directly once usb_register_dev() has succeeded. After deregistration, defer freeing memory to .release(). In other words, let release() perform the last kfree when the final open FD is closed.

In the Linux kernel, the following vulnerability has been resolved: media: hackrf: fix to not free memory after the device is registered in hackrf_probe() In hackrf driver, the following race condition occurs: ``` CPU0 CPU1 hackrf_probe() kzalloc(); // alloc hackrf_dev .... v4l2_device_register(); .... fd = sys_open("/path/to/dev"); // open hackrf fd .... v4l2_device_unregister(); .... kfree(); // free hackrf_dev .... sys_ioctl(fd, ...); v4l2_ioctl(); video_is_registered() // UAF!! .... sys_close(fd); v4l2_release() // UAF!! hackrf_video_release() kfree(); // DFB!! ``` When a V4L2 or video device is unregistered, the device node is removed so new open() calls are blocked. However, file descriptors that are already open-and any in-flight I/O-do not terminate immediately; they remain valid until the last reference is dropped and the driver's release() is invoked. Therefore, freeing device memory on the error path after hackrf_probe() has registered dev it will lead to a race to use-after-free vuln, since those already-open handles haven't been released yet. And since release() free memory too, race to use-after-free and double-free vuln occur. To prevent this, if device is registered from probe(), it should be modified to free memory only through release() rather than calling kfree() directly.

Use-after-free in Linux kernel AMD GPU driver allows local authenticated users to potentially execute arbitrary code, escalate privileges, or cause denial of service. The amdgpu_amdkfd_submit_ib() function in the AMD KFD (Kernel Fusion Driver) prematurely releases a DMA fence reference before waiting on it, creating a race condition where the fence memory may be freed before use. Vendor-released patches are available for multiple stable kernel branches (6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS exploitation probability is very low at 0.02% (7th percentile), and no public exploit or active exploitation has been identified at time of analysis.

Use-after-free in Linux kernel futex subsystem allows local authenticated attackers to achieve code execution, privilege escalation, or denial of service via sys_futex_requeue() with mismatched flags. Discovered through automated LLM analysis by Nicholas, this affects kernel versions 6.7 through 6.19.x, with patches available in 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (5th percentile) indicates low observed exploitation probability, and no active exploitation or public POC has been identified. The vulnerability requires local access with low-privilege authenticated user credentials (PR:L), making it a post-compromise escalation vector rather than a remote entry point.

Use-after-free in Linux kernel tracing subsystem allows local authenticated attackers to achieve arbitrary code execution, privilege escalation, or denial of service. The vulnerability occurs when deleting tracing instances with copy_trace_marker enabled, where improper RCU synchronization leaves freed memory accessible. Exploitation requires local access with low privileges to manipulate kernel tracing facilities. EPSS score of 0.02% (4th percentile) indicates low observed exploitation probability. Vendor patches available across multiple stable kernel versions (6.18.20, 6.19.10, 7.0).

Use after free in DevTools in Google Chrome prior to 147.0.7727.117 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

In the Linux kernel, the following vulnerability has been resolved: net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption The -EBUSY handling in tls_do_encryption(), introduced by commit 859054147318 ("net: tls: handle backlogging of crypto requests"), has a use-after-free due to double cleanup of encrypt_pending and the scatterlist entry. When crypto_aead_encrypt() returns -EBUSY, the request is enqueued to the cryptd backlog and the async callback tls_encrypt_done() will be invoked upon completion. That callback unconditionally restores the scatterlist entry (sge->offset, sge->length) and decrements ctx->encrypt_pending. However, if tls_encrypt_async_wait() returns an error, the synchronous error path in tls_do_encryption() performs the same cleanup again, double-decrementing encrypt_pending and double-restoring the scatterlist. The double-decrement corrupts the encrypt_pending sentinel (initialized to 1), making tls_encrypt_async_wait() permanently skip the wait for pending async callbacks. A subsequent sendmsg can then free the tls_rec via bpf_exec_tx_verdict() while a cryptd callback is still pending, resulting in a use-after-free when the callback fires on the freed record. Fix this by skipping the synchronous cleanup when the -EBUSY async wait returns an error, since the callback has already handled encrypt_pending and sge restoration.

Use-after-free in Linux kernel CAN raw socket implementation allows local authenticated attackers to corrupt memory and potentially achieve code execution. The vulnerability stems from premature deallocation of percpu uniq storage in raw_release() while raw_rcv() may still access it via deferred RCU callbacks. Patches available for kernel versions 6.12.83, 6.18.24, 6.19.14, and 7.0.1. EPSS exploitation probability remains low (0.02%, 5th percentile) with no active exploitation confirmed at time of analysis.

Use-after-free in Linux kernel CXL (Compute Express Link) subsystem allows local authenticated attackers to corrupt memory and potentially execute arbitrary code or cause kernel panics. The flaw occurs in cxl_detach_ep() during device removal when parent port references are freed prematurely, before child operations complete. Affects Linux kernel 6.3 through 7.0-rc5; patched in versions 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% indicates low exploitation probability. No active exploitation or public exploit code identified at time of analysis.

Use-after-free in Linux Kernel platform driver core allows local authenticated attackers to achieve high-severity impacts including code execution, privilege escalation, or denial of service. The vulnerability stems from unsafe access to the driver_override field during device probing when the bus match() callback executes without device lock protection. Patches are available across multiple kernel branches (6.12.80, 6.18.21, 6.19.11, 7.0) per vendor commits. EPSS score of 0.02% (5th percentile) indicates low observed exploitation probability, and no CISA KEV listing exists, suggesting this remains a theoretical risk rather than actively exploited threat despite the high CVSS 7.8 score.

Use-after-free in Linux kernel Bluetooth MGMT subsystem allows local authenticated users to achieve arbitrary code execution, privilege escalation, or denial of service. The vulnerability stems from improper condition checking in mgmt_add_adv_patterns_monitor_complete(), which can leave dangling pointers after freeing memory without unlinking from the list. Patches available across multiple kernel versions (6.12.80, 6.17, 6.18.21, 6.19.11, 7.0). No evidence of active exploitation (not in CISA KEV), low EPSS score (0.02%, 5th percentile) suggests limited attacker interest despite high CVSS severity.

Use-after-free in Linux kernel packet socket handling allows local attackers with low privileges to achieve kernel memory corruption, potentially leading to privilege escalation, information disclosure, or denial of service. The vulnerability stems from a race condition in packet_release() where NETDEV_UP events can re-register a socket into a fanout group's array after cleanup begins but before the socket number is zeroed, leaving dangling pointers. Patches are available across multiple stable kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score is low (0.02%, 7th percentile) and no active exploitation is confirmed (not in CISA KEV), suggesting limited real-world exploitation despite high CVSS 7.8 rating.

Use-after-free in Linux kernel ICSSG PRU Ethernet driver allows remote code execution with CVSS 9.8 scoring. Affects TI ICSSG network driver in kernels 6.15 through 7.0 (patched in 6.19.11 and 7.0). The flaw causes CPPI descriptors to be freed before timestamp processing completes on every received packet, creating a exploitable memory corruption condition. Despite critical CVSS scoring, EPSS probability is very low (0.02%, 5th percentile) and no active exploitation or public POC has been identified. The network attack vector (AV:N) combined with zero-day timing suggests this may be scored for worst-case remote exploitation scenario, but actual exploitability via network packets requires deeper investigation of ICSSG hardware context and packet processing pipeline.

Use-after-free in Linux kernel Bluetooth Intel driver enables local privilege escalation to kernel code execution. Affects Linux kernel 4.3 through 7.0-rc5, with patches available in versions 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0. Exploitation requires local authenticated access with low privileges (CVSS PR:L). EPSS score of 0.02% (5th percentile) indicates low probability of widespread exploitation. No public exploit code or active exploitation confirmed at time of analysis, though technical details in CVE description provide implementation roadmap.

Use-after-free in Linux kernel RDMA/EFA driver allows local authenticated users with low privileges to execute arbitrary code with high confidentiality, integrity, and availability impact. The vulnerability affects the admin queue completion handling where completion context data is accessed after being freed, creating a window for memory corruption exploitation. Affects kernel versions from 5.12 through 7.0-rc7, with vendor patches available for stable branches 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (4th percentile) indicates low observed exploitation probability, and no public exploit code or CISA KEV listing identified at time of analysis.

Use-after-free in Linux kernel's xe GPU driver allows local authenticated users to execute arbitrary code with kernel privileges. The vulnerability occurs in the SR-IOV physical function migration restore path when error handling fails to nullify a freed data pointer, enabling subsequent write operations to reference deallocated memory. With CVSS 7.8 (High) and very low EPSS (0.02%), this represents typical kernel memory corruption risk requiring local access and low privileges. Vendor patches are available for affected 6.19 and 7.0-rc versions.

Use-after-free in Linux kernel AMD display driver allows local authenticated users to execute arbitrary code, corrupt memory, or cause denial of service. Affects systems with AMD graphics using Display Stream Compression (DSC) and multi-stream transport (MST), particularly laptops with integrated displays and external DP-MST monitors. The vulnerability arises when mode changes occur simultaneously with DSC reconfigurations, causing improper stream lifecycle management. Vendor patch available across multiple kernel versions (6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% indicates low exploitation probability in the wild, with no CISA KEV listing or public exploit identified at time of analysis.

Use-after-free in Linux kernel SPI subsystem (fsl_lpspi driver) causes NULL pointer dereference when DMA channels are torn down while SPI transfers are active. Local attackers with low privileges can trigger denial of service or potentially execute arbitrary code on affected systems running Linux kernel versions from 4.10 through 7.0-rc2, particularly impacting embedded and IoT devices using Freescale LPSPI controllers. EPSS score of 0.02% indicates very low observed exploitation probability, and no public exploit code or active exploitation has been identified at time of analysis. Vendor-released patches available across all affected stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0).

Use-after-free in Linux kernel ISO-TP CAN protocol driver allows local authenticated users to read freed memory, corrupt kernel state, or execute arbitrary code with kernel privileges. Affects kernels from commit 96d1c81e to 6.6.131, 6.12.80, 6.18.21, and 6.19.11. Vendor-released patches available across stable kernel branches. EPSS score 0.02% (5th percentile) indicates low probability of mass exploitation, and no public exploit identified at time of analysis, though CVSS 7.8 reflects high local privilege escalation potential if successfully exploited.

Use-after-free in Linux kernel media subsystem allows local authenticated attackers to potentially execute arbitrary code, escalate privileges, or cause system crashes. The race condition between MEDIA_REQUEST_IOC_REINIT and VIDIOC_REQBUFS(0) affects request-capable V4L2 media devices in kernels since version 4.20. Patches are available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0). EPSS score of 0.02% indicates very low likelihood of mass exploitation, and no active exploitation or public POC has been identified.

Use-after-free in Linux kernel virtio_net driver allows local authenticated attackers with low privileges to potentially achieve high confidentiality, integrity, and availability impact. The flaw triggers when virtio_net is configured with napi_tx=N (non-NAPI transmit mode) and the IFF_XMIT_DST_RELEASE flag is cleared by tc route filter rules. When a network namespace is destroyed while packets remain queued in the virtio transmit ring, the freed dst_ops structure is later dereferenced during packet cleanup, causing kernel memory corruption. Vendor patches are available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (7th percentile) suggests low probability of mass exploitation, and no active exploitation or public POC has been identified at time of analysis.

Use-after-free in Linux Kernel XFS filesystem allows local authenticated users to execute arbitrary code, escalate privileges, or cause system crashes during filesystem unmount operations. The vulnerability stems from a race condition where background reclaim and inodegc processes continue running while the Active Item List (AIL) is being flushed during unmount, enabling concurrent access to freed memory structures. Patches are available across multiple stable kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% suggests very low probability of mass exploitation, and no active exploitation or public POC is identified at time of analysis.

Use-after-free in Linux Kernel XFS file system allows local authenticated users to execute arbitrary code, escalate privileges, or cause denial of service. The vulnerability affects XFS implementations from kernel 5.9 onward due to improper handling of Active Item List (AIL) pointers when performing buffer I/O in inode and quota push callbacks. With EPSS exploitation probability at 0.02% and no confirmed active exploitation, this represents a moderate real-world risk limited by local access requirements and low attack complexity. Patches are available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0).

Use-after-free in Linux kernel ext4 filesystem allows local attackers to potentially execute arbitrary code or cause denial of service during unmount operations. The vulnerability stems from a race condition between ext4_put_super() teardown and update_super_work() error notification, where sysfs_notify() accesses a freed kernfs_node object after kobject_del() has released it. Fixed in stable kernel releases 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and mainline 7.0. EPSS score of 0.02% (7th percentile) suggests low probability of exploitation in the wild, though CVSS vector indicates straightforward local exploitation requiring user interaction.

Use-after-free and NULL pointer dereference vulnerabilities in Linux kernel's ksmbd SMB server allow remote unauthenticated attackers to achieve arbitrary code execution, information disclosure, or denial of service. The flaws occur during oplock (opportunistic lock) publication when error handling frees memory still referenced by concurrent readers, and when global lease lists are accessed before critical pointers are initialized. With CVSS 9.8 (AV:N/AC:L/PR:N/UI:N), this represents a critical remote attack surface, though EPSS score of 0.02% (5th percentile) suggests minimal observed exploitation activity. Vendor patches are available across affected kernel versions 6.6.130-6.19.9.

PowerDNS Recursor versions 5.2.0-5.2.8, 5.3.0-5.3.5, and 5.4.0 suffer denial of service and potential data corruption when a malfunctioning RPZ provider causes concurrent transfers of the same RPZ zone, leading to use-after-free conditions, inconsistent zone data, and recursor crashes. The vulnerability requires high privilege attacker control over an RPZ provider and non-standard network conditions, resulting in availability and integrity impact with a CVSS score of 5.0.

Local privilege escalation in FreeBSD 13.5 through 15.0 allows unprivileged processes to gain root privileges by exploiting a use-after-free condition in the TIOCNOTTY ioctl implementation. When a process detaches from its controlling terminal and exits, a dangling pointer in the terminal structure references freed session memory, which attackers can manipulate to escalate privileges. This vulnerability affects multiple stable and release branches with CVSS 8.4 (High) but low EPSS probability (0.02%, 5th percentile), indicating theoretical severity without observed widespread exploitation. Not listed in CISA KEV, suggesting no confirmed active exploitation at time of analysis.

Use-after-free memory corruption (CWE-416) in Mozilla Firefox 149 and ESR 115.34/140.9, plus the shared Gecko engine in Thunderbird 149 and Thunderbird ESR 140.9, can lead to arbitrary code execution within the browser process when a victim renders attacker-controlled web content. This is a rolled-up batch of memory-safety bugs reported by Mozilla's own developers; Mozilla states some showed evidence of memory corruption presumed exploitable for code execution. There is no public exploit identified at time of analysis, the bug is not in CISA KEV, and EPSS is very low (0.06%, 17th percentile), consistent with the CVSS 7.5 rating being held down by high attack complexity (AC:H) and required user interaction (UI:R).

Memory corruption in Firefox's Widget: Cocoa component on macOS enables remote denial of service through use-after-free exploitation. Mozilla patched this in Firefox 150 and Firefox ESR 140.10 after internal discovery. The CVSS vector indicates network-accessible exploitation requiring no authentication or user interaction, though SSVC assessment classifies technical impact as partial and exploitation as non-automatable. No public exploit identified at time of analysis, with SSVC indicating no evidence of active exploitation.

Use-after-free in Firefox's WebAssembly JavaScript engine enables remote denial-of-service attacks against users running unpatched versions below Firefox 150. The vulnerability allows network-based attackers to crash the browser without authentication or user interaction by triggering memory corruption in WebAssembly processing. Mozilla patched this in Firefox 150 (MFSA2026-30). EPSS data not available, not listed in CISA KEV, and SSVC framework rates exploitation as 'none' with non-automatable, partial technical impact-suggesting lower real-world risk despite CVSS 7.5 severity.

Remote attackers can crash Mozilla Firefox by triggering a use-after-free in the JavaScript Engine, exploiting freed memory during JS execution to cause denial of service. Affects all unpatched Firefox versions below 150, ESR 115.35, and ESR 140.10. CVSS 7.5 (High) reflects network-accessible exploitation with no authentication required, though SSVC assessment indicates non-automatable exploitation with partial technical impact. No public exploit code or active exploitation (KEV) confirmed at time of analysis, and ENISA tracking suggests European-focused monitoring.

High-severity denial-of-service in Firefox WebRTC component allows remote unauthenticated attackers to crash the browser via network-based use-after-free memory corruption. Affects Firefox versions prior to 150 and Firefox ESR prior to 140.10. Vendor-released patches available (Firefox 150, Firefox ESR 140.10). CVSS 7.5 reflects high availability impact with low attack complexity and no privileges required. No public exploit identified at time of analysis, though SSVC framework classifies technical impact as partial and exploitation as none, suggesting limited real-world activity despite the theoretical ease of exploitation indicated by CVSS.

High-severity denial-of-service condition in Mozilla Firefox DOM processing allows remote attackers to crash the browser via network-delivered content without authentication or user interaction. Fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. CVSS 7.5 reflects network attack vector with low complexity (AV:N/AC:L/PR:N/UI:N) but impact limited to availability (A:H). EPSS data not provided. Not listed in CISA KEV, indicating no confirmed active exploitation. SSVC framework rates exploitation as 'none' and technical impact as 'partial', suggesting lower real-world priority despite high CVSS score.

Remote code execution in Google Chrome on Android versions prior to 147.0.7727.101 is possible through a use-after-free vulnerability in the Payments feature. Attackers who successfully convince users to perform specific UI interactions on a malicious webpage can achieve arbitrary code execution with high impact to confidentiality, integrity, and availability. The vulnerability requires high attack complexity and user interaction (CVSS:3.1/AV:N/AC:H/PR:N/UI:R), indicating social engineering is necessary. Google has released Chrome 147.0.7727.101 to address this issue. No evidence of active exploitation (not in CISA KEV) or public proof-of-concept code has been identified at time of analysis.

Arbitrary code execution within Chrome's sandbox affects all versions prior to 147.0.7727.101 via crafted HTML pages exploiting a use-after-free in codec processing. Remote attackers require user interaction (visiting a malicious page) but need no authentication. CVSS 8.8 (High) with network attack vector, low complexity, and high impact across confidentiality, integrity, and availability. Google patched this in the stable channel update released April 15, 2026. No public exploit code or CISA KEV listing identified at time of analysis, though Chromium issue tracker #495996858 indicates vendor-confirmed vulnerability. The sandbox containment limits initial exploitation to Chrome's restricted environment, not direct system compromise.

Use after free in Cast in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)

Use after free in Codecs in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to potentially perform out of bounds memory access via a crafted video file. (Chromium security severity: High)

Use after free in Forms in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Use after free in Permissions in Google Chrome on Android prior to 147.0.7727.101 allowed a remote attacker who convinced a user to engage in specific UI gestures to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)

Use after free in Dawn in Google Chrome prior to 147.0.7727.101 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Use after free in FileSystem in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to potentially exploit object corruption via a crafted HTML page. (Chromium security severity: High)

Use after free in Viz in Google Chrome prior to 147.0.7727.101 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Use after free in Graphite in Google Chrome prior to 147.0.7727.101 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Arbitrary code execution within Google Chrome's sandbox affects all versions prior to 147.0.7727.101 through a use-after-free vulnerability in the codec processing components. Remote attackers can exploit this by tricking users into visiting a malicious webpage, achieving high-severity compromise of confidentiality, integrity, and availability within the sandboxed renderer process. Google has released version 147.0.7727.101 as a stable channel update to address this flaw. No evidence of active exploitation (not in CISA KEV) or public exploit code has been identified at time of analysis, though the simplicity of the attack vector (network-based, low complexity, requiring only user interaction) warrants prioritized patching.

Use after free in Video in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Use after free in CSS in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Use after free in Video in Google Chrome on Windows prior to 147.0.7727.101 allowed a remote attacker who had compromised the renderer process to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)

Use after free in XR in Google Chrome on Android prior to 147.0.7727.101 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page. (Chromium security severity: Critical)

Use after free in Prerender in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)

Use after free in Proxy in Google Chrome prior to 147.0.7727.101 allowed an attacker in a privileged network position to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)

Arbitrary code execution in Adobe FrameMaker 2022.8 and earlier allows local attackers to execute malicious code with current user privileges by tricking victims into opening specially crafted files. This use-after-free memory corruption vulnerability requires no authentication but depends on user interaction. No confirmed active exploitation (not in CISA KEV) or public proof-of-concept identified at time of analysis, though the local attack vector and user interaction requirement reduce immediate remote threat surface compared to network-accessible vulnerabilities.

Heap use-after-free in libsixel 1.8.7 and earlier allows local code execution when processing malicious animated GIF files through the sixel_helper_load_image_file() API with multi-frame callbacks. The vulnerability triggers when gif_init_frame() unconditionally frees and reallocates frame->pixels between frames while client code retains references via the documented sixel_frame_ref() API, creating dangling pointers confirmed by AddressSanitizer. Fixed in version 1.8.7-r1. No public exploit iden

Use-after-free in libsixel's gdk-pixbuf2 loader enables local attackers to achieve code execution via crafted images. Affects libsixel versions through 1.8.7 when compiled with --with-gdk-pixbuf2 option. The vulnerability stems from inconsistent memory management in load_with_gdkpixbuf(), which manually frees reference-counted frame objects, leaving dangling pointers that callbacks can access post-cleanup. CVSS 7.8 (High) with local attack vector requiring user interaction. Fixed in version 1.8.7-r1. No confirmed active exploitation (CISA KEV), though proof-of-concept feasibility is high given the deterministic nature of the memory corruption.

Use-after-free in libsixel 1.8.7 and earlier enables local attackers to crash applications or execute arbitrary code via crafted SIXEL image frames. The vulnerability occurs when sixel_encoder_encode_bytes() processes resize operations that free caller-owned pixel buffers, creating dangling pointers exploitable through repeated, predictable frame manipulation. EPSS data not available; no confirmed active exploitation (not in CISA KEV), but the technical details suggest reliable exploitation potential for local privilege escalation or RCE scenarios.

Memory corruption in Microsoft Office Word enables local code execution through a use-after-free flaw affecting Microsoft 365 Apps for Enterprise and Office LTSC 2021/2024 for Windows and Mac. Despite the local attack vector (AV:L), the vulnerability requires no privileges (PR:N) or user interaction (UI:N), allowing unauthorized attackers to execute arbitrary code with high impact to confidentiality, integrity, and availability (CVSS 8.4). Vendor-released patch available via Microsoft Security Response Center as of April 2026. No public exploit identified at time of analysis, though the technical simplicity (AC:L) and memory corruption primitive increase weaponization risk.

Local privilege escalation in Windows Print Spooler Components allows authenticated attackers with low privileges to achieve complete system compromise (high confidentiality, integrity, and availability impact) by exploiting a use-after-free memory corruption vulnerability. Affects Windows 11 versions 24H2, 25H2, 26H1, Windows Server 2022 23H2 Edition, and Windows Server 2025. CVSS score 7.8 reflects local attack vector with low complexity and no user interaction required. No public exploit or CISA KEV status identified at time of analysis, though use-after-free vulnerabilities in Print Spooler have historically been attractive exploitation targets.

Local privilege escalation in Windows Ancillary Function Driver for WinSock (AFD.sys) affects all supported Windows 10, Windows 11, and Windows Server versions from 2012 through 2025. The CWE-416 use-after-free memory corruption flaw allows low-privileged authenticated attackers with local access to elevate to SYSTEM privileges, achieving complete control over confidentiality, integrity, and availability. SSVC framework rates this as non-automatable with total technical impact. No public exploit

Local privilege escalation via use-after-free in Windows Ancillary Function Driver for WinSock (AFD.sys) allows authenticated low-privileged attackers to execute arbitrary code with SYSTEM privileges across all supported Windows versions. Microsoft has released patches for Windows 10 (versions 1607-22H2), Windows 11 (versions 22H3-25H2), and Windows Server (2012-2022 23H2). The vulnerability requires local access and low privileges (PR:L) with high attack complexity (AC:H), but no public exploit

Use-after-free memory corruption in Microsoft PowerPoint (versions 2016, 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise) enables local code execution when users open malicious files. An attacker with no privileges can achieve full system compromise (high confidentiality, integrity, and availability impact) by convincing a user to open a crafted PowerPoint document. Vendor patch available via Microsoft Security Response Center. No public exploit code or confirmed active exploitation (CISA KEV) identified at time of analysis, though CVSS 7.8 rating reflects high severity for local attack scenarios.

Microsoft Excel use-after-free vulnerability (CWE-416) enables arbitrary code execution when a user opens a specially crafted Excel file. Affects Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024 (Windows and Mac), and Office Online Server. CVSS 7.8 (High) requires local access and user interaction but no authentication. No public exploit identified at time of analysis. Microsoft released patches addressing all affected product lines per MSRC update guide.

Use-after-free vulnerability in Microsoft Office Excel enables local code execution when users open maliciously crafted Excel files. Affects all major Office versions including Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024 (Windows and Mac), and Office Online Server. Attack requires no authentication (PR:N) but demands user interaction (opening a weaponized document). CVSS 7.8 (High) reflects significant impact potential (code execution with high confidentiali

Use-after-free memory corruption in Microsoft Excel across Office 2016-2024 and Microsoft 365 enables local code execution when a user opens a malicious spreadsheet. Attackers must craft a weaponized Excel file and trick users into opening it, after which arbitrary code runs with the victim's privileges. No authentication is required, though user interaction is necessary. Exploitation probability remains moderate (CVSS 7.8) with no confirmed active exploitation (no CISA KEV listing) and no publi

Use-after-free memory corruption in Microsoft Office (versions 2016 through LTSC 2024, including Microsoft 365 Apps for Enterprise) enables local code execution with no authentication or user interaction required. Attackers with local system access can execute arbitrary code with high impact to confidentiality, integrity, and availability (CVSS 8.4). No public exploit identified at time of analysis. Vendor-released patch available via Microsoft Security Response Center for all affected versions.

Desktop Window Manager (DWM) privilege escalation via use-after-free memory corruption affects Windows 10 21H2/22H2, Windows 11 22H3 through 25H2, and Windows Server 2022/2025. Local authenticated attackers with low privileges can exploit this memory corruption flaw to gain SYSTEM-level access, achieving full compromise of confidentiality, integrity, and availability. Vendor-released patches are available across all affected platforms. No public exploit identified at time of analysis, though the

Use-after-free in Microsoft Windows Speech component enables local privilege escalation to SYSTEM on Windows 10 (versions 1809, 21H2, 22H2) and Windows 11 (versions 22H3 through 26H1). Authenticated local attackers with low privileges can exploit memory corruption to gain full system control with low attack complexity and no user interaction required. CVSS 7.8 (High). Vendor-released patches available for all affected versions. No public exploit identified at time of analysis, though the straigh

Local privilege escalation in Microsoft Windows WalletService across Server 2016 through Server 2025 allows low-privileged authenticated attackers to gain SYSTEM-level access by exploiting a use-after-free memory corruption flaw. Attack complexity is high (CVSS AC:H), requiring precise timing or race condition exploitation. Patch available per vendor advisory (MSRC). No public exploit identified at time of analysis, EPSS data not provided.

Local privilege escalation in Windows Projected File System (ProjFS) across Windows 10, Windows 11, and Windows Server 2019-2025 allows authenticated low-privileged users to gain SYSTEM-level control via use-after-free memory corruption. Attack requires local access and low-privileged credentials (CVSS PR:L) but no user interaction, enabling complete compromise of confidentiality, integrity, and availability. Vendor-released patches are available for all affected versions. No public exploit identified at time of analysis, though the vulnerability class (use-after-free) is well-understood and commonly targeted once details emerge.

Local privilege escalation in Windows Common Log File System (CLFS) Driver affects Windows 10, 11, and Server 2012-2025 through a use-after-free memory corruption flaw. Authenticated local attackers with low privileges can exploit this vulnerability to gain SYSTEM-level access, achieving full control over confidentiality, integrity, and availability. While no public exploit identified at time of analysis, the Windows CLFS driver has been a frequent target for privilege escalation exploits histor

Use-after-free memory corruption in Windows UPnP Device Host enables unauthenticated adjacent network attackers to disclose sensitive information with CVSS 6.5 high severity. The vulnerability affects Windows 10 (versions 1607, 1809, 21H2, 22H2), Windows 11 (versions 22H3, 23H2, 24H2, 25H2, 26H1), and multiple Windows Server editions (2012 through 2025). Microsoft has released patches with specific version thresholds; exploitation requires network adjacency but no authentication or user interaction.

Desktop Window Manager (DWM) use-after-free memory corruption allows authenticated local attackers to escalate privileges to SYSTEM on all supported Windows 10, Windows 11, and Windows Server versions (2012-2025). The vulnerability enables low-privileged users to gain complete control over affected systems with low attack complexity and no user interaction required. Vendor-released patches are available across all affected versions. No public exploit identified at time of analysis, though the st

Local privilege escalation in the Windows Ancillary Function Driver for WinSock (AFD.sys) affects all Windows 10, Windows 11, and Windows Server versions from 2012 through 2025 via a use-after-free memory corruption flaw. Authenticated local attackers with low privileges can exploit this CWE-416 vulnerability to achieve full system compromise (SYSTEM-level access), though the high attack complexity (AC:H) suggests exploitation requires precise timing or race condition manipulation. No public exp

Windows Universal Plug and Play (UPnP) Device Host privilege escalation allows authenticated local attackers to gain SYSTEM-level access via use-after-free memory corruption. Affects all supported Windows versions from Server 2012 through Windows 11 26H1 and Windows Server 2025. Vendor-released patches available. Attack requires low complexity with no user interaction (CVSS:3.1 AV:L/AC:L/PR:L/UI:N). No public exploit identified at time of analysis, though the primitive nature of use-after-free v

Local privilege escalation in Microsoft Windows Search Component affects Windows 10 (1607-22H2), Windows 11 (22H3-26H1), and Windows Server (2012-2025) via use-after-free memory corruption (CWE-416). Authenticated local attackers with low privileges can exploit this vulnerability to gain SYSTEM-level access with low attack complexity and no user interaction required (CVSS 7.8). Vendor-released patches available for all affected versions; no public exploit identified at time of analysis.

Local privilege escalation in Windows Ancillary Function Driver for WinSock (AFD.sys) allows authenticated low-privilege users to gain SYSTEM-level access through use-after-free memory corruption. Affects all supported Windows 10, Windows 11, and Windows Server versions from 2012 through 2025, including Server Core installations. Vendor-released patches available across all affected platforms. No public exploit identified at time of analysis, though high-complexity local exploitation (CVSS AC:H)

Local privilege escalation in Windows Ancillary Function Driver for WinSock affects all supported Windows 10, 11, and Server versions through use-after-free memory corruption. Authenticated local attackers with low privileges can exploit this CWE-416 vulnerability to gain SYSTEM-level access, achieving high impact to confidentiality, integrity, and availability. Vendor-released patches are available across all affected platforms. No public exploit identified at time of analysis, though the high

Local code execution in Microsoft Office Word via use-after-free memory corruption affects Microsoft 365 Apps for Enterprise and Office LTSC 2024. Unauthenticated attackers can achieve full system compromise (confidentiality, integrity, availability) by inducing users to open specially crafted Word documents, triggering memory reuse vulnerabilities during document parsing. Vendor patch available via Microsoft Security Response Center. No public exploit identified at time of analysis, though CVSS 7.8 indicates high severity when user interaction occurs.

Local privilege escalation in Windows Container Isolation FS Filter Driver affects all supported Windows 10, Windows 11, and Windows Server versions through use-after-free memory corruption. Low-complexity attack requires only low-privileged local access to achieve full system compromise (SYSTEM-level privileges). Microsoft has released patches for all affected versions. No public exploit identified at time of analysis, but the low attack complexity (AC:L) and requirement for only low privileges

Use-after-free memory corruption in Microsoft Office Word enables local code execution with high privileges when victims open malicious documents. Affects Microsoft 365 Apps for Enterprise and Office LTSC 2021/2024 for Windows and Mac (versions below 16.108.26041219 for Mac; click-to-run editions require latest security updates). CVSS 7.8 reflects local attack vector requiring user interaction, but exploitation grants complete system compromise (confidentiality, integrity, availability all rated High). No public exploit identified at time of analysis, though use-after-free vulnerabilities are well-understood exploitation primitives. Vendor-released patch available through Microsoft security updates.

Local privilege escalation in Windows Server Update Service (WSUS) on Windows 11 version 26H1 allows low-privileged authenticated users to gain SYSTEM-level access via use-after-free memory corruption. Exploitation requires local access and high attack complexity (CVSS AC:H), indicating timing-dependent or race condition triggers. Microsoft has released patch version 10.0.28000.1836 to address this vulnerability. No public exploit code or active exploitation confirmed at time of analysis.

Microsoft Excel memory corruption via use-after-free enables arbitrary code execution when victims open malicious spreadsheet files. This vulnerability affects all major Office deployments including Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, and Office LTSC 2021/2024 for both Windows and macOS, as well as Office Online Server. Attackers require user interaction to open a crafted file, but no authentication is needed (CVSS PR:N), making this exploitable through phishing or file-sharing attacks. Vendor patches are available through Microsoft Security Response Center. No public exploit or active exploitation confirmed at time of analysis, though the straightforward attack vector (local file + user click) and high impact (code execution with full system privileges) warrant prompt patching.

Local privilege escalation in Windows User Interface Core across Windows 10, 11, and Server 2019-2025 allows low-privileged authenticated attackers to achieve SYSTEM-level access via use-after-free memory corruption. The vulnerability requires high attack complexity and local access but enables container escape (scope change) with full confidentiality, integrity, and availability impact. Vendor-released patches are available for all affected versions. No public exploit identified at time of analysis, though the use-after-free primitive is a well-understood exploitation technique.

Remote code execution in Microsoft Remote Desktop Client for Windows allows unauthenticated network attackers to execute arbitrary code by delivering a malicious connection file or server response, requiring user interaction. This use-after-free vulnerability (CWE-416) affects Windows 10 (versions 1607-22H2), Windows 11 (22H3-26H1), Windows Server (2012-2025), and standalone Remote Desktop client versions below 2.0.1070.0. With CVSS 8.8 (network-accessible, no authentication required, low comple

Local code execution in Windows Universal Plug and Play (UPnP) Device Host across all supported Windows 10, 11, and Server versions allows unauthenticated attackers to achieve high-impact compromise via use-after-free memory corruption. The vulnerability affects Windows 10 versions 1607 through 22H2, Windows 11 versions 22H3 through 26H1, and Windows Server 2012 through 2025 (including Server Core installations). Despite requiring local access and high attack complexity (CVSS:3.1/AV:L/AC:H), the

Local privilege escalation in Microsoft Desktop Window Manager (dwm.exe) affects all supported Windows 10, Windows 11, and Windows Server versions via a use-after-free memory corruption flaw. Authenticated local attackers with low privileges can exploit this CWE-416 weakness to gain SYSTEM-level access with low attack complexity, requiring no user interaction. No public exploit identified at time of analysis, and SSVC framework assesses exploitation status as 'none' with non-automatable attack r

Desktop Window Manager (DWM) use-after-free vulnerability enables local privilege escalation to SYSTEM on Windows 11 and Server 2022/2025. Low-complexity attack requires only low-privileged authenticated access with no user interaction, affecting all current Windows 11 versions (22H2 through 26H1) and Server editions. Vendor-released patches available as of May 2026. CVSS 7.8 (High) reflects significant local privilege escalation risk; no public exploit identified at time of analysis, though the

Local privilege escalation in Windows Speech Brokered API allows authenticated users to gain SYSTEM-level access via use-after-free memory corruption. All supported Windows 10, Windows 11, and Windows Server versions (2016-2025) are affected. Microsoft released patches in their April 2026 security update cycle. EPSS score of 0.04% (12th percentile) indicates low exploitation likelihood in the wild, and no active exploitation or public exploit code has been identified at time of analysis.

Local privilege escalation in Windows Universal Plug and Play (UPnP) Device Host allows authenticated attackers with low privileges to achieve system-level access through use-after-free memory corruption. Affects all supported Windows 10, Windows 11, and Windows Server versions from 2012 through 2025. Microsoft has released patches across all affected product lines. No public exploit identified at time of analysis, though the local attack vector and authentication requirement (PR:L) limit immedi

Local privilege escalation via use-after-free in Windows Ancillary Function Driver for WinSock (AFD.sys) affects all supported Windows versions from Windows 10 1607 through Windows 11 26H1 and Windows Server 2012-2025. Authenticated local attackers with low privileges can exploit memory corruption to gain SYSTEM-level access, though high attack complexity suggests reliable exploitation requires sophisticated techniques. Vendor-released patches are available across all affected versions. No publi

Desktop Window Manager (DWM) in Windows 10 21H2/22H2, Windows 11 22H3/23H2, and Windows Server 2022 allows authenticated local attackers with low privileges to elevate to SYSTEM via a use-after-free memory corruption flaw. CVSS 7.8 (High). Vendor-released patch available. No public exploit identified at time of analysis, though EPSS data not provided. This is a post-authentication escalation requiring initial local foothold, not a remote intrusion vector.