CVE-2025-68733

Summary

In the Linux kernel, the following vulnerability has been resolved:

smack: fix bug: unprivileged task can create labels

If an unprivileged task is allowed to relabel itself (/smack/relabel-self is not empty), it can freely create new labels by writing their names into own /proc/PID/attr/smack/current

This occurs because do_setattr() imports the provided label in advance, before checking "relabel-self" list.

This change ensures that the "relabel-self" list is checked before importing the label.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux38416e53936ecf896948fdeffc36b76979117952 < c80173233014a360c13fa5cc79d36bfe6e53a8edaffected
LinuxLinux38416e53936ecf896948fdeffc36b76979117952 < 6b1e45e13546c9ea0b1d99097993ac0aafae90b1affected
LinuxLinux38416e53936ecf896948fdeffc36b76979117952 < 4a7a7621619a366712fb9cefcb6e69f956c247ceaffected
LinuxLinux38416e53936ecf896948fdeffc36b76979117952 < f8fd5491100f920847a3338d5fba22db19c72773affected
LinuxLinux38416e53936ecf896948fdeffc36b76979117952 < ac9fce2efabad37c338aac86fbe100f77a080e59affected
LinuxLinux38416e53936ecf896948fdeffc36b76979117952 < 64aa81250171b6bb6803e97ea7a5d73bfa061f6eaffected
LinuxLinux38416e53936ecf896948fdeffc36b76979117952 < 60e8d49989410a7ade60f5dadfcd979c117d05c0affected
LinuxLinux38416e53936ecf896948fdeffc36b76979117952 < c147e13ea7fe9f118f8c9ba5e96cbd644b00d6b3affected
LinuxLinux4.4affected
LinuxLinux0 < 4.4unaffected
LinuxLinux5.10.248 <= 5.10.*unaffected
LinuxLinux5.15.198 <= 5.15.*unaffected
LinuxLinux6.1.160 <= 6.1.*unaffected
LinuxLinux6.6.120 <= 6.6.*unaffected
LinuxLinux6.12.63 <= 6.12.*unaffected
LinuxLinux6.17.13 <= 6.17.*unaffected
LinuxLinux6.18.2 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

References