PT-2025-8510 · Linux+3 · Linux Kernel+3

Kuniyuki Iwashima · Published 2023-05-09 · Updated 2025-02-27 · CVE-2022-49577

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 udp l3mdev accept in the Linux kernel. The value of sysctl udp l3mdev accept can be changed concurrently while it is being read, which requires the use of READ ONCE() to ensure a consistent view of its value.

Recommendations To resolve this issue, apply the fix that adds READ ONCE() to the reader of sysctl udp l3mdev accept. 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

CESA-2023_2951

CVE-2022-49577

RHSA-2023:2458

RHSA-2023:2951

RHSA-2023_2458

RHSA-2023_2951

Affected Products

Astra Linux

Centos

Linux Kernel

Red Hat

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49577.json · Exploit
• https://ubuntu.com/security/CVE-2022-49577 · Vendor Advisory
• https://git.kernel.org/stable/c/fcaef69c79ec222e55643e666b80b221e70fa6a8 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49577 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49577 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49577 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49577 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49577 · Security Note
• https://git.kernel.org/stable/c/3d72bb4188c708bb16758c60822fc4dda7a95174 · Patch
• https://git.kernel.org/stable/c/f39b03bd727a8fea62e82f10fe2e0d753b9930ff · Patch
• https://git.kernel.org/stable/c/cb0d28934ca10f99c47e2c6f451405d6c954fe48 · Patch
• https://git.kernel.org/stable/c/3f2ac2d6511bb0652abf4d7388d65bb9ff1c641c · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49577 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://lore.kernel.org/linux-cve-announce/2025022607-CVE-2022-49577-da62@gregkh/T · Note