btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer()

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Summary

CVECVE-2026-43358
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 15:16:46 UTC
Updated2026-05-12 14:10:27 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer() Call rcu_read_lock() before exiting the loop in try_release_subpage_extent_buffer() because there is a rcu_read_unlock() call past the loop. This has been detected by the Clang thread-safety analyzer.

Risk And Classification

EPSS: 0.000170000 probability, percentile 0.041320000 (date 2026-05-12)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ad580dfa388fabb52af033e3f8cc5d04be985e54 5e1ab71f74a1e61f1254dff128a764fdebaec0b8 git Not specified
CNA Linux Linux affected ad580dfa388fabb52af033e3f8cc5d04be985e54 35b0c8768e848e1b7e32052db36b5fa59b6a33a1 git Not specified
CNA Linux Linux affected ad580dfa388fabb52af033e3f8cc5d04be985e54 b2840e33127ce0eea880504b7f133e780f567a9b git Not specified
CNA Linux Linux affected 10ec363cfefeeb77fda4c1ac20a531f21de45264 git Not specified
CNA Linux Linux affected 6.17 Not specified
CNA Linux Linux unaffected 6.17 semver Not specified
CNA Linux Linux unaffected 6.18.19 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.9 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/b2840e33127ce0eea880504b7f133e780f567a9b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/35b0c8768e848e1b7e32052db36b5fa59b6a33a1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5e1ab71f74a1e61f1254dff128a764fdebaec0b8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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