Deadlock in Linux kernel - CVE-2026-68460
Published: August 17, 2026
Vulnerability identifier: #VU143615
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-68460
CWE-ID: CWE-833
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a deadlock condition in f2fs_balance_fs() when handling writeback and garbage collection on nearly exhausted f2fs filesystem space. A local user can trigger filesystem write activity to cause a denial of service.
The issue occurs when the f2fs filesystem space is nearly exhausted.
Affected software
Linux kernel
How to mitigate CVE-2026-68460
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/162d57d8eb8440ad2d90469bf2c116abb04a9d33
- https://git.kernel.org/stable/c/345c1d1ff751104ebdc32c145be80de566c5150f
- https://git.kernel.org/stable/c/44480f7e3f8369671452c0d262831c51aa5a9c20
- https://git.kernel.org/stable/c/998536c96b6ad9d99cd85dea11452ab83dc7c88d
- https://git.kernel.org/stable/c/cf8b5937b7b258927ccca267995e13e76a07b38e
- https://git.kernel.org/stable/c/dd3114870771562036fdcf5abe813956f36d224d
- https://git.kernel.org/stable/c/e273116fbb6dfd7f027c0623e7c5109241be1919
- https://git.kernel.org/stable/c/f51db99287b5acf81513ece82a0c95eb5db008e3