Description
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix slab-use-after-free in qd_put Commit a475c5dd16e5 ("gfs2: Free quota data objects synchronously") started freeing quota data objects during filesystem shutdown instead of putting them back onto the LRU list, but it failed to remove these objects from the LRU list, causing LRU list corruption. This caused use-after-free when the shrinker (gfs2_qd_shrink_scan) tried to access already-freed objects on the LRU list. Fix this by removing qd objects from the LRU list before freeing them in qd_put(). Initial fix from Deepanshu Kartikey <kartikey406@gmail.com>.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
a475c5dd16e57c570113eccba51955b5df8bb052 to < 53aaf083de197946b25bc4ffa3068d37366ce73daffecteda475c5dd16e57c570113eccba51955b5df8bb052 to < ca7c67bdd293089b3483f18886d6b2d0037d2ad9affecteda475c5dd16e57c570113eccba51955b5df8bb052 to < 1d47922b98046b8070a77347fb883a6523792803affecteda475c5dd16e57c570113eccba51955b5df8bb052 to < 80fff26d7a0c3926b511661c27eecc811a420eefaffecteda475c5dd16e57c570113eccba51955b5df8bb052 to < 22150a7d401d9e9169b9b68e05bed95f7f49bf69affected
Linux Linux
Default version status: affected
6.6affected0 to < 6.6unaffected6.6.160 to ≤ 6.6.*unaffected6.12.75 to ≤ 6.12.*unaffected6.18.14 to ≤ 6.18.*unaffected6.19.4 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/53aaf083de197946b25bc4ffa3068d37366ce73d ↗
- https://git.kernel.org/stable/c/ca7c67bdd293089b3483f18886d6b2d0037d2ad9 ↗
- https://git.kernel.org/stable/c/1d47922b98046b8070a77347fb883a6523792803 ↗
- https://git.kernel.org/stable/c/80fff26d7a0c3926b511661c27eecc811a420eef ↗
- https://git.kernel.org/stable/c/22150a7d401d9e9169b9b68e05bed95f7f49bf69 ↗