btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68422
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:36 UTC
Updated2026-08-17 06:17:51 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots() If we have an unexpected reloc_root for our root, we jump to the out label but never drop the reference we obtained for root, resulting in a leak. Add a missing btrfs_put_root() call.

Risk And Classification

EPSS: 0.002090000 probability, percentile 0.113210000 (date 2026-08-17)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 b3d39b03799600c76c33486e2d29b73a771023db git Not specified
CNA Linux Linux affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 72f673d1c1deb819554d3e7e154f6d84301eb735 git Not specified
CNA Linux Linux affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 60a23d4ea169e27403f3bb023bb98036797c0206 git Not specified
CNA Linux Linux affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 7591d1727067d6063247901ad25c4bdc4e5695c4 git Not specified
CNA Linux Linux affected 24213fa46c7080c31d79aa2e3e2f0d9480cab700 ce6050bafb4e33377dc17fcc357736bfc351180c git Not specified
CNA Linux Linux affected 5.13 Not specified
CNA Linux Linux unaffected 5.13 semver Not specified
CNA Linux Linux unaffected 6.6.148 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.101 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.42 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.6 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7591d1727067d6063247901ad25c4bdc4e5695c4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b3d39b03799600c76c33486e2d29b73a771023db 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/60a23d4ea169e27403f3bb023bb98036797c0206 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ce6050bafb4e33377dc17fcc357736bfc351180c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/72f673d1c1deb819554d3e7e154f6d84301eb735 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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