PT-2025-40730 · Linux+3 · Linux Kernel+3

Published 2022-11-30 · Updated 2025-12-04 · CVE-2022-50496

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A use-after-free (UAF) issue was identified and resolved in the dm cache functionality of the Linux kernel. This problem occurs when dm resume() and dm destroy() are executed concurrently. The fix involves cancelling a timer again within the destroy() function.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Use After Free

Weakness Enumeration

CWE-119

CWE-416

Related Identifiers

ALSA-2025_16880

BDU:2026-02270

CESA-2023_2951

CVE-2022-50496

RHSA-2023:2458

RHSA-2023:2951

RHSA-2023_2458

RHSA-2023_2951

SUSE-SU-2025:4111-1

SUSE-SU-2025:4135-1

SUSE-SU-2025:4139-1

SUSE-SU-2025:4149-1

SUSE-SU-2025:4188-1

SUSE-SU-2025:4189-1

SUSE-SU-2025:4320-1

Affected Products

Centos

Linux Kernel

Red Hat

Suse

References · 629

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50496.json · Exploit
• https://git.kernel.org/stable/c/993406104d2b28fe470126a062ad37a1e21e792e · Patch
• https://git.kernel.org/stable/c/2f097dfac7579fd84ff98eb1d3acd41d53a485f3 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:4135-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4149-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4111-1 · Vendor Advisory
• https://git.kernel.org/stable/c/2b17026685a270b2beaf1cdd9857fcedd3505c7e · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:4139-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50496 · Vendor Advisory
• https://git.kernel.org/stable/c/6a3e412c2ab131c54945327a7676b006f000a209 · Patch
• https://git.kernel.org/stable/c/d2a0b298ebf83ab6236f66788a3541e91ce75a70 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:4188-1 · Vendor Advisory
• https://git.kernel.org/stable/c/6ac4f36910764cb510bafc4c3768544f86ca48ca · Patch
• https://bdu.fstec.ru/vul/2026-02270 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-50496 · Security Note