PT-2025-25882 · Linux+2 · Linux Kernel+2

Published 2022-08-30 · Updated 2025-07-28 · CVE-2022-49956

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 (affected versions not specified)

Description A use after free issue has been identified in the Linux kernel, specifically in the staging: rtl8712 component. The read/write macreg hdl() functions free the pcmd pointer when Read/Write MACREG callbacks are NULL, resulting in a use after free condition. This issue has been resolved by deleting the callbacks.

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

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-02657

CVE-2022-49956

SUSE-SU-2025:02264-1

SUSE-SU-2025:02308-1

SUSE-SU-2025:02320-1

SUSE-SU-2025:02321-1

SUSE-SU-2025:02322-1

SUSE-SU-2025:02334-1

SUSE-SU-2025:02537-1

SUSE-SU-2025:2264-1

SUSE-SU-2025_02264-1

SUSE-SU-2025_02308-1

SUSE-SU-2025_02334-1

SUSE-SU-2025_02537-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 745

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49956.json · Exploit
• https://git.kernel.org/stable/c/9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27 · Patch
• https://osv.dev/vulnerability/CVE-2022-49956 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49956 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02308-1 · Vendor Advisory
• https://git.kernel.org/stable/c/e230a4455ac3e9b112f0367d1b8e255e141afae0 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:02334-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02537-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49956 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49956 · Security Note
• https://git.kernel.org/stable/c/d0aac7146e96bf39e79c65087d21dfa02ef8db38 · Patch
• https://git.kernel.org/stable/c/dc02aaf950015850e7589696521c7fca767cea77 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49956 · Vendor Advisory
• https://git.kernel.org/stable/c/19e3f69d19801940abc2ac37c169882769ed9770 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49956 · Security Note