PT-2025-8182 · Linux+2 · Linux Kernel+2

Published 2022-02-17 · Updated 2025-09-22 · CVE-2022-49254

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description A NULL pointer dereference issue was found in the Linux kernel, specifically in the cal ctx v4l2 init formats() function. This issue occurs when devm kzalloc() fails and assigns a NULL value to ctx->active fmt, which is then dereferenced. The problem was identified by a static analyzer.

Recommendations For the affected Linux kernel versions, add a NULL check of ctx->active fmt in the cal ctx v4l2 init formats() function to prevent the NULL pointer dereference.

Exploit

Fix

Improper Resource Release

NULL Pointer Dereference

Weakness Enumeration

CWE-404

CWE-476

Related Identifiers

BDU:2026-04314

CVE-2022-49254

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1241-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 1334

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49254.json · Exploit
• https://git.kernel.org/stable/c/91e2805579ab0783eed53acc2bf9fb553e939004 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://git.kernel.org/stable/c/aa613ac270292e102503e9767882e39200efe608 · Patch
• https://cve.org/CVERecord?id=CVE-2022-49254 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49254 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49254 · Vendor Advisory
• https://git.kernel.org/stable/c/abd77889851d2ead0d0c9c4d29f1808801477b00 · Patch
• https://bdu.fstec.ru/vul/2026-04314 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://git.kernel.org/stable/c/1381f1a629a090c251965edb56f849ad648414a4 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49254 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49254 · Security Note