PT-2025-8564 · Linux+3 · Linux Kernel+3

Kuniyuki Iwashima · Published 2023-05-09 · Updated 2025-04-15 · CVE-2022-49631

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 around sysctl raw l3mdev accept. The value of sysctl raw l3mdev accept can be changed concurrently while it is being read, which may lead to unpredictable behavior. To address this, the use of READ ONCE() is recommended for its reader.

Recommendations For the Linux kernel, consider adding READ ONCE() to the reader of sysctl raw l3mdev accept to prevent concurrent modifications. 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

CVE-2022-49631

OPENSUSE-SU-2025_1263-1

RHSA-2023:2458

RHSA-2023_2458

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_1027-1

SUSE-SU-2025_1241-1

SUSE-SU-2025_1263-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Suse

References · 1344

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49631.json · Exploit
• https://git.kernel.org/stable/c/038a87b3e460d2ee579c8b1bd3890d816d6687b1 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49631 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49631 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49631 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49631 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1194-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49631 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49631 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://git.kernel.org/stable/c/46e9c46203fd4676720ddca0fef7eff26826648e · Patch
• https://git.kernel.org/stable/c/ab5adca2e17d6595f3fc0e25ccb6bcbe2e01ca4f · Patch