CVE-2026-45955
HIGHmd/md-llbitmap: fix percpu_ref not resurrected on suspend timeout
Title source: cnaDescription
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.
Scores
CVSS v3
7.1
EPSS
0.0012
EPSS Percentile
2.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Details
Status
published
Products (11)
linux/Kernel
6.18.0 - 6.18.14linux
linux/Kernel
6.19.0 - 6.19.4linux
Linux/Linux
< 6.18
Linux/Linux
5ab829f1971dc99f2aac10846c378e67fc875abc - 095417d6b669c2dec39a5842ccb94df915f97f54
Linux/Linux
5ab829f1971dc99f2aac10846c378e67fc875abc - 2446d099350185caeed19ab2c0270451a97296fb
Linux/Linux
5ab829f1971dc99f2aac10846c378e67fc875abc - d119bd2e1643cc023210ff3c6f0657e4f914e71d
Linux/Linux
6.18
Linux/Linux
6.18.14 - 6.18.*
Linux/Linux
6.19.4 - 6.19.*
Linux/Linux
7.0
... and 1 more
Published
May 27, 2026
Tracked Since
May 27, 2026