PT-2025-8119 · Linux+2 · Linux Kernel+2

Jiri Slaby · Published 2022-01-26 · Updated 2025-04-16 · CVE-2022-49191

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 issue in the Linux kernel has been identified, specifically in the mxser module. The problem occurs when the Line Status Register (LSR) is 0xff in the activate() function, which can lead to an error and a potential buffer leak. Normally, when activate() fails, the buffer is not freed because shutdown() is not called. This issue is resolved by properly freeing the buffer in a designated label.

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

Exploit

Memory Leak

Buffer Overflow

Weakness Enumeration

CWE-401

CWE-120

Related Identifiers

BDU:2026-04319

CVE-2022-49191

SUSE-SU-2025:1293-1

SUSE-SU-2025_1293-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 503

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49191.json · Exploit
• https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d · Patch
• https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc · Patch
• https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576 · Patch
• https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c · Patch
• https://osv.dev/vulnerability/CVE-2022-49191 · Vendor Advisory
• https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4 · Patch
• https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49191 · Vendor Advisory
• https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd · Patch
• https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a · Patch
• https://bdu.fstec.ru/vul/2026-04319 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-49191 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49191 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49191 · Security Note