PT-2025-8262 · Linux+5 · Linux Kernel+5

Sean Wang · Published 2022-01-01 · Updated 2026-03-14 · CVE-2022-49328

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.10.100-fix-510-56778d365941-kasan

Description A use-after-free issue has been identified in the Linux kernel, specifically in the mt76 module. The issue arises from the mt76 txq schedule function accessing a pointer to wcid after it has been freed. This is caught by the KASAN (Kernel Address Sanitizer) tool. The issue is related to the protection of mtxq->wcid with rcu lock between mt76 txq schedule and sta info [alloc, free].

Recommendations For Linux kernel versions prior to 5.10.100-fix-510-56778d365941-kasan, consider applying the fix that removes the non-RCU wcid pointer to resolve the use-after-free issue. As a temporary workaround, consider restricting access to the vulnerable mt76 txq schedule function until a patch is available.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALSA-2025_16880

BDU:2025-10581

CESA-2023_2951

CVE-2022-49328

OESA-2025-1433

OESA-2025-1434

RHSA-2023:2458

RHSA-2023:2951

RHSA-2023_2458

RHSA-2023_2951

RHSA-2025:10179

RHSA-2025:10828

RHSA-2025:9493

RHSA-2025:9494

RHSA-2025:9498

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

Centos

Debian

Linux Kernel

Red Hat

Suse

References · 1344

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49328.json · Exploit
• https://osv.dev/vulnerability/OESA-2025-1433 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49328 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49328 · Vendor Advisory
• https://git.kernel.org/stable/c/d5f77f1dbb59feae81f88e44551e8e1d8a802d9a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49328 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-21928 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-1434 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49328 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52870 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49328 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49328 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49246 · Security Note