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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98083
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:37 UTC
Updated2026-10-06 14:44:14 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001180000 probability, percentile 0.015440000 (date 2026-10-05)

Problem Types: CWE-416

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ab69bf6f8970c09d3735c25094e9471d54365282 089d9c45ea49ffffe55a8fe08d0ce2536626e90a git Not specified
CNA Linux Linux affected 02c372e1f016e5113217597ab37b399c4e407477 b185bdf30313e213fa1c887fe22fc3d513c061d9 git Not specified
CNA Linux Linux affected 02c372e1f016e5113217597ab37b399c4e407477 2fbfd02bdfe12b20bd3cc7a3190fb32e3f7072f5 git Not specified
CNA Linux Linux affected 02c372e1f016e5113217597ab37b399c4e407477 b7b94923b3b5774d85a2a7c8d6eb9e3e0ef66685 git Not specified
CNA Linux Linux affected 02c372e1f016e5113217597ab37b399c4e407477 a8813a923f9e43f788b357fb55c35f7f6ed6f98c git Not specified
CNA Linux Linux affected 6.6.130 6.6.158 semver Not specified
CNA Linux Linux affected 6.7 Not specified
CNA Linux Linux unaffected 6.7 semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/2fbfd02bdfe12b20bd3cc7a3190fb32e3f7072f5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/089d9c45ea49ffffe55a8fe08d0ce2536626e90a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b7b94923b3b5774d85a2a7c8d6eb9e3e0ef66685 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a8813a923f9e43f788b357fb55c35f7f6ed6f98c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b185bdf30313e213fa1c887fe22fc3d513c061d9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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