CVE-2024-50210
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…
Does this matter?
Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own.
Description
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. [pabeni@redhat.com: fixed commit message typo]
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.17% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1ba33b327c3f88a7baee598979d73ab5b44d41ccPatch
- https://git.kernel.org/stable/c/5f063bbf1ee6b01611c016b54e050a41506eb794Patch
- https://git.kernel.org/stable/c/6e62807c7fbb3c758d233018caf94dfea9c65dbdPatch
- https://git.kernel.org/stable/c/a8219446b95a859488feaade674d13f9efacfa32Patch
- https://git.kernel.org/stable/c/b27330128eca25179637c1816d5a72d6cc408c66Patch
- https://git.kernel.org/stable/c/c7fcfdba35abc9f39b83080c2bce398dad13a943Patch
- https://git.kernel.org/stable/c/d005400262ddaf1ca1666bbcd1acf42fe81d57cePatch
- https://git.kernel.org/stable/c/e56e0ec1b79f5a6272c6e78b36e9d593aa0449afPatch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.