Description
In the Linux kernel, the following vulnerability has been resolved: xfs: save ailp before dropping the AIL lock in push callbacks In xfs_inode_item_push() and xfs_qm_dquot_logitem_push(), the AIL lock is dropped to perform buffer IO. Once the cluster buffer no longer protects the log item from reclaim, the log item may be freed by background reclaim or the dquot shrinker. The subsequent spin_lock() call dereferences lip->li_ailp, which is a use-after-free. Fix this by saving the ailp pointer in a local variable while the AIL lock is held and the log item is guaranteed to be valid.
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
90c60e16401248a4900f3f9387f563d0178dcf34 to < edd1637d4e3911ab6c760f553f2040fe72f61a13affected90c60e16401248a4900f3f9387f563d0178dcf34 to < 19437e4f7bb909afde832b39372aa2f3ce3cfd88affected90c60e16401248a4900f3f9387f563d0178dcf34 to < 6dbe17f19c290a72ce57d5abc70e1fad0c3e14e5affected90c60e16401248a4900f3f9387f563d0178dcf34 to < 75669e987137f49c99ca44406bf0200d1892dd16affected90c60e16401248a4900f3f9387f563d0178dcf34 to < d8fc60bbaf5aea1604bf9f4ed565da6a1ac7a87daffected90c60e16401248a4900f3f9387f563d0178dcf34 to < 50f5f056807b7bed74f4f307f2ca0ed92f3e556daffected90c60e16401248a4900f3f9387f563d0178dcf34 to < 4c7d50147316cf049462f327c4a3e9dc2b7f1dd0affected90c60e16401248a4900f3f9387f563d0178dcf34 to < 394d70b86fae9fe865e7e6d9540b7696f73aa9b6affected
Linux Linux
Default version status: affected
5.9affected0 to < 5.9unaffected5.10.253 to ≤ 5.10.*unaffected5.15.203 to ≤ 5.15.*unaffected6.1.168 to ≤ 6.1.*unaffected6.6.131 to ≤ 6.6.*unaffected6.12.80 to ≤ 6.12.*unaffected6.18.21 to ≤ 6.18.*unaffected6.19.11 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/edd1637d4e3911ab6c760f553f2040fe72f61a13 ↗
- https://git.kernel.org/stable/c/19437e4f7bb909afde832b39372aa2f3ce3cfd88 ↗
- https://git.kernel.org/stable/c/6dbe17f19c290a72ce57d5abc70e1fad0c3e14e5 ↗
- https://git.kernel.org/stable/c/75669e987137f49c99ca44406bf0200d1892dd16 ↗
- https://git.kernel.org/stable/c/d8fc60bbaf5aea1604bf9f4ed565da6a1ac7a87d ↗
- https://git.kernel.org/stable/c/50f5f056807b7bed74f4f307f2ca0ed92f3e556d ↗
- https://git.kernel.org/stable/c/4c7d50147316cf049462f327c4a3e9dc2b7f1dd0 ↗
- https://git.kernel.org/stable/c/394d70b86fae9fe865e7e6d9540b7696f73aa9b6 ↗