PT-2025-8571 · Linux+3 · Linux Kernel+3

Kuniyuki Iwashima · Published 2023-05-09 · Updated 2025-04-16 · CVE-2022-49638

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 related to icmp sysctl variables. When reading these variables, they can be changed concurrently, which can lead to data-races. To address this, the use of READ ONCE() is necessary to prevent such 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

CVE-2022-49638

RHSA-2023:2458

RHSA-2023_2458

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

Linux Kernel

Red Hat

Suse

References · 1457

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49638.json · Exploit
• https://git.kernel.org/stable/c/48d7ee321ea5182c6a70782aa186422a70e67e22 · Patch
• https://git.kernel.org/stable/c/edeec63b13c252193d626c2a48d7a2f0e7016dc2 · Patch
• https://git.kernel.org/stable/c/53ecd09ef2fb35fa69667ae8e414ef6b00fd3bf6 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1293-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49638 · Security Note
• https://git.kernel.org/stable/c/e088ceb73c24ab4774da391d54a6426f4bfaefce · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49638 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49638 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49638 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49638 · Vendor Advisory
• https://git.kernel.org/stable/c/0cba7ca667ceb06934746ddd9833a25847bde81d · Patch
• https://git.kernel.org/stable/c/798c2cf57c63ab39c8aac24d6a3d50f4fa5eeb06 · Patch