CVSS 6.3 · Medium EPSS 0,23%
Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 6.3 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: filelock: Remove locks reliably when fcntl/close race is detected When fcntl_setlk() races with close(), it removes the created lock with do_lock_file_wait(). However, LSMs can allow the first do_lock_file_wait() that created the lock while denying the second do_lock_file_wait() that tries to remove the lock. Separately, posix_lock_file() could also fail to remove a lock due to GFP_KERNEL allocation failure (when splitting a range in the middle). After the bug has been triggered, use-after-free reads will occur in lock_get_status() when userspace reads /proc/locks. This can likely be used to read arbitrary kernel memory, but can't corrupt kernel memory. Fix it by calling locks_remove_posix() instead, which is designed to reliably get rid of POSIX locks associated with the given file and files_struct and is also used by filp_flush().
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 2.6.13 hingga sebelum 4.19.319 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.281 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.223 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.164 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.101 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.42 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.9.9 |
| linux | linux kernel | Versi 6.10 rc1 |
| linux | linux kernel | Versi 6.10 rc2 |
| linux | linux kernel | Versi 6.10 rc3 |
| linux | linux kernel | Versi 6.10 rc4 |
| linux | linux kernel | Versi 6.10 rc5 |
| linux | linux kernel | Versi 6.10 rc6 |