CVE-2024-42312: 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: sysctl: always initialize i_uid/i_gid Always initialize i_uid/i_gid inside the sysfs core so set_ownership() can safely skip setting them. Commit 5ec27ec735ba ("fs/proc/proc_sysctl.c: fix the default values of i_uid/i_gid on /proc/sys inodes.") added defaults for i_uid/i_gid when set_ownership() was not implemented. It also missed adjusting net_ctl_set_ownership() to use the same default values in case the computation of a better value failed.

Affected products

• Linux Linux Kernel: from 4.9.187, before 4.10 (fixed in 4.10); from 4.14.135, before 4.15 (fixed in 4.15); from 4.19.61, before 4.20 (fixed in 4.20); from 5.1.20, before 5.2 (fixed in 5.2); from 5.2.3, before 5.10.224 (fixed in 5.10.224); from 5.11, before 5.15.165 (fixed in 5.15.165); …

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