PT-2025-18526 · Linux+2 · Linux Kernel+2

Published 2025-05-01 · Updated 2025-07-10 · CVE-2022-49809

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 memory leak issue has been identified in the Linux kernel, specifically in the net/x25 component. The x25 lapb receive frame() function uses skb copy() to obtain a private copy of skb. However, the new skb is not properly freed in the error handling path for undersized or fragmented skb, resulting in a memory leak.

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

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2022-49809

SUSE-SU-2025:01918-1

SUSE-SU-2025:01966-1

SUSE-SU-2025:01982-1

SUSE-SU-2025:01995-1

SUSE-SU-2025:02173-1

SUSE-SU-2025:02262-1

SUSE-SU-2025:2173-1

SUSE-SU-2025_01982-1

SUSE-SU-2025_02173-1

SUSE-SU-2025_02262-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 549

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49809.json · Exploit
• https://git.kernel.org/stable/c/dfcfbe4f2e4b2c81cff4e79b48502d97fda73118 · Patch
• https://git.kernel.org/stable/c/e109b41870db995cae25dfaf0cc3922f9028b1a1 · Patch
• https://git.kernel.org/stable/c/c8baf1fc248b2e88642f094fea9509a9bf98c5bb · Patch
• https://osv.dev/vulnerability/CVE-2022-49809 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49809 · Security Note
• https://git.kernel.org/stable/c/2929cceb2fcf0ded7182562e4888afafece82cce · Patch
• https://cve.org/CVERecord?id=CVE-2022-49809 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49809 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49809 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01982-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49809 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49809 · Vendor Advisory
• https://git.kernel.org/stable/c/0ef17d966445358a55c5f4ccf2c73cca3e39192b · Patch
• https://git.kernel.org/stable/c/fda0ba7c84b46d10947c687320804b9de149a921 · Patch