High 7.0Published Sep 25, 2026

CVE-2026-98083btrfs: fix transaction use-after-free in raid stripe insertion

Updated under an hour ago (Oct 26, 2026, 8:50 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix transaction use-after-free in raid stripe insertion If allocation of a RAID stripe extent fails, btrfs_insert_one_raid_extent() aborts and ends the transaction before returning -ENOMEM. btrfs_finish_one_ordered(), the production caller through btrfs_insert_raid_extent(), still owns the transaction handle. It handles the error by aborting the transaction and then reaches the common exit path, which ends the transaction again. The premature end can free the handle and drop its transaction reference. Transaction cleanup can then free the transaction before the caller's second abort accesses the handle and transaction, resulting in use-after-free. Keep the abort at the failure site, but let the caller's common exit path end the transaction once, after it has finished using both objects.

CVSS: 7.0 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from ab69bf6f8970c09d3735c25094e9471d54365282 before 089d9c45ea49ffffe55a8fe08d0ce2536626e90a; from 02c372e1f016e5113217597ab37b399c4e407477 before b185bdf30313e213fa1c887fe22fc3d513c061d9; from 02c372e1f016e5113217597ab37b399c4e407477 before 2fbfd02bdfe12b20bd3cc7a3190fb32e3f7072f5; from 02c372e1f016e5113217597ab37b399c4e407477 before b7b94923b3b5774d85a2a7c8d6eb9e3e0ef66685; from 02c372e1f016e5113217597ab37b399c4e407477 before a8813a923f9e43f788b357fb55c35f7f6ed6f98c; from 6.6.130 before 6.6.158	CNA record
linux linux_kernel linux:linux_kernel	from 6.6.130 before 6.6.158; from 6.7 before 6.12.111; from 6.13 before 6.18.53; from 6.19 before 7.2.7; 7.3	NVD

References

References

https://git.kernel.org/stable/c/089d9c45ea49ffffe55a8fe08d0ce2536626e90a	patch
https://git.kernel.org/stable/c/b185bdf30313e213fa1c887fe22fc3d513c061d9	patch
https://git.kernel.org/stable/c/2fbfd02bdfe12b20bd3cc7a3190fb32e3f7072f5	patch
https://git.kernel.org/stable/c/b7b94923b3b5774d85a2a7c8d6eb9e3e0ef66685	patch
https://git.kernel.org/stable/c/a8813a923f9e43f788b357fb55c35f7f6ed6f98c	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.