CVE-2026-64306: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: crypto: drbg - Fix returning success on failure in CTR_DRBG drbg_ctr_generate() sometimes returns success when it fails, leaving the output buffer uninitialized. Fix it.

Affected products

• Linux Linux Kernel: from 3.12.44, before 3.13 (fixed in 3.13); from 4.1, before 5.10.261 (fixed in 5.10.261); from 5.11, before 5.15.212 (fixed in 5.15.212); from 5.16, before 6.1.178 (fixed in 6.1.178); from 6.2, before 6.6.145 (fixed in 6.6.145); from 6.7, before 6.12.96 (fixed in 6.12.96); …

Published 2026-07-25. Last modified 2026-09-03.