PT-2025-8567 · Linux+3 · Linux Kernel+3

Kuniyuki Iwashima · Published 2022-07-11 · Updated 2025-04-14 · CVE-2022-49634

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/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 data-race issue exists in the Linux kernel due to concurrent access of a sysctl variable. This issue can lead to load/store-tearing. The problem arises from the lack of protection for readers and writers accessing the variable simultaneously. The patch resolves this by using READ ONCE() and WRITE ONCE() internally in the proc dou8vec minmax() function to prevent data-races.

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

Exploit

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

BDU:2026-03290

CVE-2022-49634

RHSA-2023:2458

RHSA-2023_2458

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

Linux Kernel

Red Hat

Suse

References · 1335

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49634.json · Exploit
• https://osv.dev/vulnerability/CVE-2022-49634 · Vendor Advisory
• https://git.kernel.org/stable/c/5f776daef0b5354615ec4b4234cd9539ca05f273 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49634 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49634 · Vendor Advisory
• https://git.kernel.org/stable/c/e58b02e445463065b4078bf621561da75197853f · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49634 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://git.kernel.org/stable/c/f177b382c33900d0e5a9766493c11a1074076f78 · Patch
• https://git.kernel.org/stable/c/7dee5d7747a69aa2be41f04c6a7ecfe3ac8cdf18 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49634 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49634 · Vendor Advisory