PT-2025-8471 · Linux+4 · Linux Kernel+4

Amadeusz Sławiński · Published 2022-04-12 · Updated 2025-04-25 · CVE-2022-49538

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 where the input dev can be unregistered while calling snd jack report when using ASoC, leading to a NULL pointer dereference. This occurs due to lack of serialization in access to input dev.

Recommendations To resolve this issue, apply a patch that implements a mutex lock to serialize access to input dev, preventing the NULL pointer dereference.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-02225

CESA-2022_7683

CVE-2022-49538

OESA-2025-1447

RHSA-2022:7683

RHSA-2022:8267

RHSA-2022_7683

RHSA-2022_8267

SUSE-SU-2025:1176-1

SUSE-SU-2025:1241-1

SUSE-SU-2025:1293-1

SUSE-SU-2025_1241-1

SUSE-SU-2025_1293-1

Affected Products

Astra Linux

Centos

Linux Kernel

Red Hat

Suse

References · 1473

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49538.json · Exploit
• https://git.kernel.org/stable/c/74bab3bcf422593c582e47130aa8eb41ebb2dc09 · Patch
• https://git.kernel.org/stable/c/f68bed124c7699e23ffb4ce4fcc84671e9193cde · Patch
• https://git.kernel.org/stable/c/9e6a73b0c0f2014eb89249fb1640c5a3d58221c4 · Patch
• https://bdu.fstec.ru/vul/2026-02225 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49538 · Vendor Advisory
• https://git.kernel.org/stable/c/8487a88136d54a1a4d3f26f1399685db648ab879 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49538 · Security Note
• https://git.kernel.org/stable/c/582aea6084cc59fec881204f026816d1219f2348 · Patch
• https://git.kernel.org/stable/c/5cc6f623f4818c7d7e9e966a45ebf324901ca9c5 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1293-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49538 · Vendor Advisory
• https://git.kernel.org/stable/c/c093b62c40027c21d649c5534ad7aa3605a99b00 · Patch
• https://git.kernel.org/stable/c/e2b8681769f6e205382f026b907d28aa5ec9d59a · Patch