In the Linux kernel, the following vulnerability has been resolved: posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime() If get_clock_desc() succeeds, it calls fget() for the clockid's fd, and get the clk->rwsem read lock, so the error path should release the lock to make the lock balance and fput the clockid's fd to make the refcount balance and release the fd related resource. However the below commit left the error path locked behind resulting in unbalanced locking. Check timespec64_valid_strict() before get_clock_desc() to fix it, because the "ts" is not changed after that. [[email protected]: fixed commit message typo]
https://git.kernel.org/stable/c/e56e0ec1b79f5a6272c6e78b36e9d593aa0449af
https://git.kernel.org/stable/c/d005400262ddaf1ca1666bbcd1acf42fe81d57ce
https://git.kernel.org/stable/c/c7fcfdba35abc9f39b83080c2bce398dad13a943
https://git.kernel.org/stable/c/b27330128eca25179637c1816d5a72d6cc408c66
https://git.kernel.org/stable/c/a8219446b95a859488feaade674d13f9efacfa32
https://git.kernel.org/stable/c/6e62807c7fbb3c758d233018caf94dfea9c65dbd
https://git.kernel.org/stable/c/5f063bbf1ee6b01611c016b54e050a41506eb794
https://git.kernel.org/stable/c/1ba33b327c3f88a7baee598979d73ab5b44d41cc