PT-2025-8590 · Linux+5 · Linux Kernel+5

Oliver Neukum · Published 2025-02-26 · Updated 2025-11-12 · CVE-2022-49657

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 within the usbnet module. The problem arises from the usbnet write cmd async() function, which incorrectly handles buffer freeing in error cases. This results 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

ALSA-2025:20518

ALSA-2025_12746

ALSA-2025_12752

ALSA-2025_12753

ALSA-2025_16880

ALSA-2025_18281

ALSA-2025_19102

ALSA-2025_19103

ALSA-2025_19409

ALSA-2025_20518

CVE-2022-49657

INFSA-2025_20518

OPENSUSE-SU-2025_1263-1

RHSA-2025:20518

RHSA-2025_20518

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1194-1

SUSE-SU-2025:1241-1

SUSE-SU-2025:1263-1

SUSE-SU-2025:1293-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

SUSE-SU-2025_1263-1

SUSE-SU-2025_1293-1

Affected Products

Almalinux

Astra Linux

Linux Kernel

Red Hat

Rocky Linux

Suse

References · 1723

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49657.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:1263-1 · Vendor Advisory
• https://git.kernel.org/stable/c/e7b4f69946a38209b4a4f660bf0e4cbed94f9b4b · Patch
• https://errata.almalinux.org/9/ALSA-2025-20518.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20518-0.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1293-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49657 · Vendor Advisory
• https://git.kernel.org/stable/c/04894ab34faf40ab72a8a5ab5b404bb0606bbbff · Patch
• https://git.kernel.org/stable/c/3eed421ca5c809da93456f69203d164d5220be3d · Patch
• https://ubuntu.com/security/CVE-2022-49657 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2025:20518 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1194-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory