CVE-2024-26993

In the Linux kernel, the following vulnerability has been resolved: fs: sysfs: Fix reference leak in sysfs_break_active_protection() The sysfs_break_active_protection() routine has an obvious reference leak in its error path. If the call to kernfs_find_and_get() fails then kn will be NULL, so the companion sysfs_unbreak_active_protection() routine won't get called (and would only cause an access violation by trying to dereference kn->parent if it was called). As a result, the reference to kobj acquired at the start of the function will never be released. Fix the leak by adding an explicit kobject_put() call when kn is NULL.

• linux linux kernel (>= 3.16.62 < 3.17) • linux linux kernel (>= 3.18.121 < 3.19) • linux linux kernel (>= 4.4.154 < 4.5) • linux linux kernel (>= 4.9.125 < 4.10) • linux linux kernel (>= 4.14.68 < 4.15) • linux linux kernel (>= 4.18.6 < 4.19) • linux linux kernel (>= 4.19 < 5.15.157) • linux linux kernel (>= 5.16 < 6.1.88) • linux linux kernel (>= 6.2 < 6.6.29) • linux linux kernel (>= 6.7 < 6.8.8) • linux linux kernel 6.9