CVE-2024-43885

Vulnerability ID

CVE-2024-43885

Severity

MEDIUM

Severity Score

5.5

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double inode unlock for direct IO sync writes If we do a direct IO sync write, at btrfs_sync_file(), and we need to skip inode logging or we get an error starting a transaction or an error when flushing delalloc, we end up unlocking the inode when we shouldn't under the 'out_release_extents' label, and then unlock it again at btrfs_direct_write(). Fix that by checking if we have to skip inode unlocking under that label.

References

https://git.kernel.org/stable/c/1a607d22dea4f60438747705495ec4d0af2ec451

https://git.kernel.org/stable/c/8bd4c9220416111500c275546c69c63d42185793

https://git.kernel.org/stable/c/7ba27f14161fc20c4fc0051658a22ddd832eb0aa

https://git.kernel.org/stable/c/d924a0be2f218501588cf463d70f1c71afea06d9

https://git.kernel.org/stable/c/e0391e92f9ab4fb3dbdeb139c967dcfa7ac4b115

Mitigation and Patches

https://git.kernel.org/stable/c/1a607d22dea4f60438747705495ec4d0af2ec451

https://git.kernel.org/stable/c/8bd4c9220416111500c275546c69c63d42185793

https://git.kernel.org/stable/c/7ba27f14161fc20c4fc0051658a22ddd832eb0aa

https://git.kernel.org/stable/c/d924a0be2f218501588cf463d70f1c71afea06d9

https://git.kernel.org/stable/c/e0391e92f9ab4fb3dbdeb139c967dcfa7ac4b115