PT-2025-8570 · Linux+2 · Linux Kernel+2

Kuniyuki Iwashima · Published 2023-05-09 · Updated 2025-02-27 · CVE-2022-49637

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 fib sync mem in the Linux kernel. The problem occurs because sysctl fib sync mem can be changed concurrently while being read, which can lead to unpredictable behavior. To address this, the use of READ ONCE() is necessary to prevent the data-race.

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

CVE-2022-49637

RHSA-2023:2458

RHSA-2023_2458

Affected Products

Astra Linux

Linux Kernel

Red Hat

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49637.json · Exploit
• https://git.kernel.org/stable/c/7c1acd98fb221dc0d847451b9ab86319f8b9916c · Patch
• https://ubuntu.com/security/CVE-2022-49637 · Vendor Advisory
• https://git.kernel.org/stable/c/190cd4ff128373271e065afb20f1d2247b3f10c3 · Patch
• https://cve.org/CVERecord?id=CVE-2022-49637 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49637 · Vendor Advisory
• https://git.kernel.org/stable/c/73318c4b7dbd0e781aaababff17376b2894745c0 · Patch
• https://git.kernel.org/stable/c/418b191d5f223a8cb6cab09eae1f72c04ba6adf2 · Patch
• https://git.kernel.org/stable/c/9be8aac91960ea32fd0e874758c9afee665c57d2 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49637 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49637 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49637 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49637 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/CVEnew/status/1894592892728967208 · Twitter Post