Skip to main content

Linux Kernel CVE-2022-50510

MEDIUM
Memory Leak (CWE-401)
2025-10-07 416baaa9-dc9f-4396-8d5f-8c081fb06d67
5.5
CVSS 3.1 · NVD
Share

Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
5.5 LOW
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 17, 2026 - 20:45 vuln.today
Patch released
Mar 17, 2026 - 20:45 nvd
Patch available
CVE Published
Oct 07, 2025 - 16:15 nvd
MEDIUM 5.5

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init()

arm_smmu_pmu_init() won't remove the callback added by cpuhp_setup_state_multi() when platform_driver_register() failed. Remove the callback by cpuhp_remove_multi_state() in fail path.

Similar to the handling of arm_ccn_init() in commit 26242b330093 ("bus: arm-ccn: Prevent hotplug callback leak")

AnalysisAI

A resource cleanup vulnerability exists in the Linux kernel's ARM SMMUv3 Performance Monitoring Unit (PMU) initialization code where a CPU hotplug callback registered via cpuhp_setup_state_multi() is not properly removed if platform_driver_register() fails, leading to a use-after-free condition. This affects Linux kernel versions across multiple stable branches and can be exploited by local attackers with limited privileges to trigger a denial of service through kernel panic or memory corruption. The vulnerability has a patch available from multiple kernel branches, with an EPSS score of 0.01% indicating low real-world exploitation probability despite the moderate CVSS 5.5 score.

Technical ContextAI

The vulnerability resides in the perf/smmuv3 subsystem of the Linux kernel, specifically in the arm_smmu_pmu_init() function responsible for initializing performance monitoring capabilities for ARM System Memory Management Unit version 3 devices. The root cause is classified as CWE-401 (Missing Release of Memory after Effective Lifetime), a resource management failure where a system resource (CPU hotplug callback state) is allocated but never deallocated in error paths. The affected component is part of the ARM SMMU PMU driver (cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*), which provides performance monitoring for virtualization and memory management operations. When cpuhp_setup_state_multi() successfully registers a hotplug callback but platform_driver_register() subsequently fails, the callback remains active in kernel memory. The fix, similar to commit 26242b330093 in the ARM CCN driver, requires explicitly calling cpuhp_remove_multi_state() in the error handling path to properly clean up the registered callback state machine.

RemediationAI

Upgrade to a patched Linux kernel version that includes one of the six commits referenced in the stable kernel repository at https://git.kernel.org/stable/. Users should identify their current kernel version and update to the next stable release that includes the arm_smmu_pmu_init() hotplug callback cleanup fix. For systems that cannot immediately patch, the vulnerability impact is minimized since exploitation requires either intentional triggering of platform driver registration failure or local code execution capability. Ensure systems are kept current with stable kernel updates from your distribution (e.g., kernel-lts packages for RHEL/CentOS, linux-image-generic for Ubuntu), and verify patch status using 'uname -r' post-update. For production ARM-based systems running ARM SMMU virtualization, prioritize kernel patching as part of your regular maintenance window. No runtime workarounds or configuration changes can mitigate this vulnerability; kernel patching is the only remediation.

CVE-2022-0847 HIGH POC
7.8 Mar 10

Linux kernel contains a flaw known as 'Dirty Pipe' where improper pipe buffer flag initialization allows unprivileged lo

CVE-2015-1328 HIGH POC
7.8 Nov 28

The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does no

CVE-2017-7308 HIGH POC
7.8 Mar 29

The packet_set_ring function in net/packet/af_packet.c in the Linux kernel through 4.10.6 does not properly validate cer

CVE-2017-16995 HIGH POC
7.8 Dec 27

The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial

CVE-2017-1000112 HIGH POC
7.0 Oct 05

Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. Rated high severity (CVSS 7.0). Public ex

CVE-2015-8660 MEDIUM POC
6.7 Dec 28

The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr op

CVE-2012-0056 MEDIUM POC
6.9 Jan 27

The mem_write function in the Linux kernel before 3.2.2, when ASLR is disabled, does not properly check permissions when

CVE-2014-0038 MEDIUM POC
6.9 Feb 06

The compat_sys_recvmmsg function in net/compat.c in the Linux kernel before 3.13.2, when CONFIG_X86_X32 is enabled, allo

CVE-2016-8655 HIGH POC
7.8 Dec 08

Race condition in net/packet/af_packet.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cau

CVE-2016-0728 HIGH POC
7.8 Feb 08

The join_session_keyring function in security/keys/process_keys.c in the Linux kernel before 4.4.1 mishandles object ref

CVE-2017-0561 CRITICAL POC
9.8 Apr 07

A remote code execution vulnerability in the Broadcom Wi-Fi firmware could enable a remote attacker to execute arbitrary

CVE-2022-2588 MEDIUM POC
5.3 Jan 08

It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the h

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
SUSE Liberty Linux 8 Fixed
SUSE Liberty Linux 9 Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Availability Extension 15 SP7 Fixed

Share

CVE-2022-50510 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy