CVE-2026-45888
md/raid1: fix memory leak in raid1_run()
In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix memory leak in raid1_run() raid1_run() calls setup_conf() which registers a thread via md_register_thread(). If raid1_set_limits() fails, the previously registered thread is not unregistered, resulting in a memory leak of the md_thread structure and the thread resource itself. Add md_unregister_thread() to the error path to properly cleanup the thread, which aligns with the error handling logic of other paths in this function. Compile tested only. Issue found using a prototype static analysis tool and code review.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ 97894f7d3c2966164516a8a5109674763d3a55e1; < c94fd6e8a71efd047ff36930e840f3c25679e136 (affected, git) ≥ 97894f7d3c2966164516a8a5109674763d3a55e1; < ec10e3dc93994b87adf7c759a4639fe34013989a (affected, git) ≥ 97894f7d3c2966164516a8a5109674763d3a55e1; < b37588b0282a2b3cdda9db1d53712745ce66dea0 (affected, git) ≥ 97894f7d3c2966164516a8a5109674763d3a55e1; < 6abc7d5dcf0ee0f85e16e41c87fbd06231f28753 (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
6.9 (affected) ≥ 0; < 6.9 (unaffected, semver) ≥ 6.12.75; ≤ 6.12.* (unaffected, semver) ≥ 6.18.14; ≤ 6.18.* (unaffected, semver) ≥ 6.19.4; ≤ 6.19.* (unaffected, semver) ≥ 7.0; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136CNA: Linux
- https://git.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989aCNA: Linux
- https://git.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0CNA: Linux
- https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753CNA: Linux
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