CVE-2023-53861: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ext4: correct grp validation in ext4_mb_good_group Group corruption check will access memory of grp and will trigger kernel crash if grp is NULL. So do NULL check before corruption check.

Affected products

• Linux Linux: from 5.10.181, before 5.10.195 (fixed in 5.10.195); from 5.15.113, before 5.15.132 (fixed in 5.15.132); from 6.1.30, before 6.1.53 (fixed in 6.1.53); from 6.3.4, before 6.4 (fixed in 6.4); from 6.4, before 6.4.16 (fixed in 6.4.16); from 6.5, before 6.5.3 (fixed in 6.5.3)

Published 2025-12-09. Last modified 2026-06-17.