CVE-2026-43358

MEDIUM

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

Title source: cna

Description

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.

References (3)

Core 3

Core References

https://git.kernel.org/stable/c/5e1ab71f74a1e61f1254dff128a764fdebaec0b8

https://git.kernel.org/stable/c/35b0c8768e848e1b7e32052db36b5fa59b6a33a1

https://git.kernel.org/stable/c/b2840e33127ce0eea880504b7f133e780f567a9b

Scores

CVSS v3 5.5

EPSS 0.0001

EPSS Percentile 2.3%

Attack Vector LOCAL

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

Details

Status published

Products (13)

Linux/Linux < 6.17

Linux/Linux 10ec363cfefeeb77fda4c1ac20a531f21de45264

Linux/Linux 6.16.4 - 6.17

Linux/Linux 6.17

Linux/Linux 6.18.19 - 6.18.*

Linux/Linux 6.19.9 - 6.19.*

Linux/Linux 7.0

Linux/Linux ad580dfa388fabb52af033e3f8cc5d04be985e54 - 35b0c8768e848e1b7e32052db36b5fa59b6a33a1

Linux/Linux ad580dfa388fabb52af033e3f8cc5d04be985e54 - 5e1ab71f74a1e61f1254dff128a764fdebaec0b8

Linux/Linux ad580dfa388fabb52af033e3f8cc5d04be985e54 - b2840e33127ce0eea880504b7f133e780f567a9b

... and 3 more

Published May 08, 2026

Tracked Since May 08, 2026