7.8

CVE-2026-31454

xfs: save ailp before dropping the AIL lock in push callbacks

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.9 < 5.10.253
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.203
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.168
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.131
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.80
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.21
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.11
Linux ≫ Linux Kernel Version7.0 Updaterc1
Linux ≫ Linux Kernel Version7.0 Updaterc2
Linux ≫ Linux Kernel Version7.0 Updaterc3
Linux ≫ Linux Kernel Version7.0 Updaterc4
Linux ≫ Linux Kernel Version7.0 Updaterc5
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.026
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/19437e4f7bb909afde832b39372aa2f3ce3cfd88
Patch
https://git.kernel.org/stable/c/394d70b86fae9fe865e7e6d9540b7696f73aa9b6
Patch
https://git.kernel.org/stable/c/4c7d50147316cf049462f327c4a3e9dc2b7f1dd0
Patch
https://git.kernel.org/stable/c/50f5f056807b7bed74f4f307f2ca0ed92f3e556d
Patch
https://git.kernel.org/stable/c/6dbe17f19c290a72ce57d5abc70e1fad0c3e14e5
Patch
https://git.kernel.org/stable/c/75669e987137f49c99ca44406bf0200d1892dd16
Patch
https://git.kernel.org/stable/c/d8fc60bbaf5aea1604bf9f4ed565da6a1ac7a87d
Patch
https://git.kernel.org/stable/c/edd1637d4e3911ab6c760f553f2040fe72f61a13
Patch