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CVE-2026-45955

Last refreshed2026-10-17

Status: UPDATED  |  Advisory ID: CVE-2026-45955

Key Details

CVECVE-2026-45955
CVSS Score / Version
7.1 (High) / CVSS v3.1
Updated2026-10-16
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CVSS Prose
attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is high; availability impact is high.
Affected products
Linux Kernel

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
LinuxLinux Kernel
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

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. (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-45955
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-45955

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