smack: fix bug: unprivileged task can create labels

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CVE-2025-68733

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/curre...

CVE-2025-68733

CVE-2025-68733 is a Linux kernel vulnerability in the SMACK labeling feature. The issue allowed an unprivileged task that relabels itself (when /smack/relabel-self is non-empty) to create new labels by writing names into /proc/PID/attr/smack/current. Root cause: do_setattr() imported the provided...