EUVD-2026-24793
GHSA-r4xh-pf27-fwp5
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
7DescriptionNVD
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.
AnalysisAI
Use-after-free in Linux Kernel XFS file system allows local authenticated users to execute arbitrary code, escalate privileges, or cause denial of service. The vulnerability affects XFS implementations from kernel 5.9 onward due to improper handling of Active Item List (AIL) pointers when performing buffer I/O in inode and quota push callbacks. …
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RemediationAI
Within 24 hours: Inventory all systems running Linux kernels 5.9-7.0 and identify which kernel versions are in use. Within 7 days: Prioritize patching systems running XFS file systems with kernel versions 5.10.x (update to 5.10.253+), 5.15.x (update to 5.15.203+), 6.1.x (update to 6.1.168+), 6.6.x (update to 6.6.131+), 6.12.x (update to 6.12.80+), 6.18.x (update to 6.18.21+), 6.19.x (update to 6.19.11+), or 7.0.x (update to 7.0+). …
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