CVE-2026-45955

In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout When llbitmap_suspend_timeout() times out waiting for percpu_ref to become zero, it returns -ETIMEDOUT without resurrecting the percpu_ref. The caller (md_llbitmap_daemon_fn) then continues to the next page without calling llbitmap_resume(), leaving the percpu_ref in a killed state permanently. Fix this by resurrecting the percpu_ref before returning the error, ensuring the page control structure remains usable for subsequent operations.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/095417d6b669c2dec39a5842ccb94df915f97f54	Patch
https://git.kernel.org/stable/c/2446d099350185caeed19ab2c0270451a97296fb	Patch
https://git.kernel.org/stable/c/d119bd2e1643cc023210ff3c6f0657e4f914e71d	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

19 Oct 2026, 20:18

Type	Values Removed	Values Added
CWE		CWE-404

Information

Published : 2026-05-27 14:17

Updated : 2026-10-19 20:18

NVD link : CVE-2026-45955

Mitre link : CVE-2026-45955

CVE.ORG link : CVE-2026-45955

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo CWE-404

Improper Resource Shutdown or Release

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