Improper control of a resource through its lifetime in Linux kernel - CVE-2026-45899
Published: May 28, 2026
Vulnerability identifier: #VU132585
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-2026-45899
CWE-ID: CWE-664
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 state management in the ext4 extent status tree when splitting extents. A local user can trigger a split extent failure to cause a denial of service.
How to mitigate CVE-2026-45899
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/120c6bd7ca9d3e80a968b758cbb3fbd67570f132
- https://git.kernel.org/stable/c/31bf37cf53ede8145e2bc62da803d4506da92975
- https://git.kernel.org/stable/c/337506dc652383c80839edb8d8dcdd8ff2129b4f
- https://git.kernel.org/stable/c/6e54f8dfee359bbd58086c883ea8cffd5312999d
- https://git.kernel.org/stable/c/79b592e8f1b435796cbc2722190368e3e8ffd7a1
- https://git.kernel.org/stable/c/808f3191498f300174523c54cab101e18795ae4e
- https://git.kernel.org/stable/c/dc7c9b9d03a59a7fe483574531327e650a4b4adc