PT-2025-8519 · Linux+2 · Linux Kernel+2

Kuniyuki Iwashima · Published 2023-05-09 · Updated 2025-02-27 · CVE-2022-49586

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 tcp fastopen in the Linux kernel. The value of sysctl tcp fastopen can be changed concurrently while it is being read, which requires the use of READ ONCE() to ensure data consistency.

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-2022-49586

RHSA-2023:2458

RHSA-2023_2458

Affected Products

Astra Linux

Linux Kernel

Red Hat

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49586.json · Exploit
• https://git.kernel.org/stable/c/03da610696a32578fc4f986479341ce9d430df08 · Patch
• https://git.kernel.org/stable/c/25d53d858a6c0b89a6e69e376c2a57c4f4c2c8cc · Patch
• https://cve.org/CVERecord?id=CVE-2022-49586 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49586 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49586 · Security Note
• https://ubuntu.com/security/CVE-2022-49586 · Vendor Advisory
• https://git.kernel.org/stable/c/5a54213318c43f4009ae158347aa6016e3b9b55a · Patch
• https://osv.dev/vulnerability/CVE-2022-49586 · Vendor Advisory
• https://git.kernel.org/stable/c/22938534c611136f35e2ca545bb668073ca5ef49 · Patch
• https://git.kernel.org/stable/c/539d9ab79eba3974b479cad61a8688c41fe62e12 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49586 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49586 · Vendor Advisory
• https://git.kernel.org/stable/c/448ab998947996a0a451f8229f19087964cf2670 · Patch
• https://lore.kernel.org/linux-cve-announce/2025022609-CVE-2022-49586-f70a@gregkh/T · Note