Bug 2468168 (CVE-2026-43358) - CVE-2026-43358 kernel: btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer()
Summary: CVE-2026-43358 kernel: btrfs: add missing RCU unlock in error path in try_rel...
Keywords:
Status: NEW
Alias: CVE-2026-43358
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-08 15:02 UTC by OSIDB Bzimport
Modified: 2026-05-08 20:16 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-05-08 15:02:44 UTC 
In 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.
Comment 1 Keith Grant 2026-05-08 20:13:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050825-CVE-2026-43358-4b09@gregkh/T
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