CVE-2022-49809: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix skb leak in x25_lapb_receive_frame() x25_lapb_receive_frame() using skb_copy() to get a private copy of skb, the new skb should be freed in the undersized/fragmented skb error handling path. Otherwise there is a memory leak.

Is your site exposed to CVE-2022-49809?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.0.72 — 3.1
linux	linux_kernel	3.1.1 — 4.9.334
linux	linux_kernel	4.10 — 4.14.300
linux	linux_kernel	4.15 — 4.19.267
linux	linux_kernel	4.20 — 5.4.225
linux	linux_kernel	5.5 — 5.10.156
linux	linux_kernel	5.11 — 5.15.80
linux	linux_kernel	5.16 — 6.0.10
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/0ef17d966445358a55c5f4ccf2c73cca3e39192b https://git.kernel.org/stable/c/2929cceb2fcf0ded7182562e4888afafece82cce https://git.kernel.org/stable/c/2d675be16a461310d738d93f9f1a00da62055c5a https://git.kernel.org/stable/c/9f00da9c866d506998bf0a3f699ec900730472da https://git.kernel.org/stable/c/c8baf1fc248b2e88642f094fea9509a9bf98c5bb https://git.kernel.org/stable/c/dfcfbe4f2e4b2c81cff4e79b48502d97fda73118 https://git.kernel.org/stable/c/e109b41870db995cae25dfaf0cc3922f9028b1a1 https://git.kernel.org/stable/c/fda0ba7c84b46d10947c687320804b9de149a921

Frequently Asked Questions

What is CVE-2022-49809? +

In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix skb leak in x25_lapb_receive_frame() x25_lapb_receive_frame() using skb_copy() to get a private copy of skb, the new skb should be freed in the undersized/fragmented skb error handling path. Otherwise there is a memory leak. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49809? +

CVE-2022-49809 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-49809? +

CVE-2022-49809 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-49809? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-0646

A denial-of-service security issue exists within the 1794-AENTR adapter due to improper memory handling of CIP protocol requests. This vulnerability …

CVE-2026-20746

Virtual attribute handling in Ping Identity PingDirectory in affected versions allows only authorized users to exhaust java memory heap when …

CVE-2026-53429

Missing Release of Memory after Effective Lifetime vulnerability in leandrocp mdex and mdex_native allows an attacker who controls a rendered …

CVE-2026-12932

A memory leak in the tls-crypt-v2 client key extraction in OpenVPN 2.5.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote …

CVE-2024-25450 8.8

imlib2 v1.9.1 was discovered to mishandle memory allocation in the function init_imlib_fonts().

CVE-2025-20133 8.6

A vulnerability in the management and VPN web servers of the Remote Access SSL VPN feature of Cisco Secure Firewall …

CVE-2022-49809