CVE-2024-0646: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

An out-of-bounds memory write flaw was found in the Linux kernel’s Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Affected products

• Linux Linux Kernel: from 4.20, before 5.4.267 (fixed in 5.4.267); from 5.5, before 5.10.208 (fixed in 5.10.208); from 5.11, before 5.15.147 (fixed in 5.15.147); from 5.16, before 6.1.69 (fixed in 6.1.69); from 6.2, before 6.6.7 (fixed in 6.6.7); version 6.7 only
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only

Published 2024-01-17. Last modified 2026-08-06.