CVE-2024-42312

Summary

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.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/1deae34db9f4f8e0e03f891be2e2e15c15c8ac05 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/1deae34db9f4f8e0e03f891be2e2e15c15c8ac05Patch
• https://git.kernel.org/stable/c/34a86adea1f2b3c3f9d864c8cce09dca644601abPatch
• https://git.kernel.org/stable/c/98ca62ba9e2be5863c7d069f84f7166b45a5b2f4Patch
• https://git.kernel.org/stable/c/b2591c89a6e2858796111138c38fcb6851aa1955Patch
• https://git.kernel.org/stable/c/c7e2f43d182f5dde473389dbb39f16c9f0d64536Patch
• https://git.kernel.org/stable/c/ffde3af4b29bf97d62d82e1d45275587e10a991aPatch
• https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html