Medium · published August 17, 2024
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.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 4.9.187, < 4.10 | 4.10 |
| linux/linux_kernel | ≥ 4.14.135, < 4.15 | 4.15 |
| linux/linux_kernel | ≥ 4.19.61, < 4.20 | 4.20 |
| linux/linux_kernel | ≥ 5.1.20, < 5.2 | 5.2 |
| linux/linux_kernel | ≥ 5.2.3, < 5.10.224 | 5.10.224 |
| linux/linux_kernel | ≥ 5.11, < 5.15.165 | 5.15.165 |
| linux/linux_kernel | ≥ 5.16, < 6.1.104 | 6.1.104 |
| linux/linux_kernel | ≥ 6.2, < 6.6.45 | 6.6.45 |
| linux/linux_kernel | ≥ 6.7, < 6.10.3 | 6.10.3 |