CVE-2022-49586: Linux Kernel

Medium severity, CVSS 4.7. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctl_tcp_fastopen. While reading sysctl_tcp_fastopen, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.

Affected products

• Linux Linux Kernel: from 3.6, before 4.19.254 (fixed in 4.19.254); from 4.20, before 5.4.208 (fixed in 5.4.208); from 5.5, before 5.10.134 (fixed in 5.10.134); from 5.11, before 5.15.58 (fixed in 5.15.58); from 5.16, before 5.18.15 (fixed in 5.18.15); version 5.19 only

Published 2025-02-26. Last modified 2026-06-17.