Improper locking in Linux kernel - CVE-2026-46299
Published: June 10, 2026
Vulnerability identifier: #VU134229
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-46299
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper lock management in hfsplus_fill_super() when mounting a crafted HFS+ filesystem image. A local user can trigger the error path during filesystem mount to cause a denial of service.
The issue occurs when hfsplus_cat_build_key() fails after hfs_find_init() has acquired tree->tree_lock, leading to cleanup of the tree structure while the lock is still held.
How to mitigate CVE-2026-46299
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/041acda6d9f96006703466449c10c9a69590c8b9
- https://git.kernel.org/stable/c/3ca80e3012c8be85b4f8d0d20eac8d3b17ff257e
- https://git.kernel.org/stable/c/90c500e4fd83fa33c09bc7ee23b6d9cc487ac733
- https://git.kernel.org/stable/c/bfbcce6a7b0552a390620d9b2c4d2bcb1825cbdc
- https://git.kernel.org/stable/c/d309d3308de658d87c42d97e044c89a226327526