md/raid1: fix memory leak in raid1_run()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45888
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:02 UTC
Updated2026-06-25 21:13:31 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000180000 probability, percentile 0.048460000 (date 2026-06-01)

Problem Types: CWE-401

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 97894f7d3c2966164516a8a5109674763d3a55e1 c94fd6e8a71efd047ff36930e840f3c25679e136 git Not specified
CNA Linux Linux affected 97894f7d3c2966164516a8a5109674763d3a55e1 ec10e3dc93994b87adf7c759a4639fe34013989a git Not specified
CNA Linux Linux affected 97894f7d3c2966164516a8a5109674763d3a55e1 b37588b0282a2b3cdda9db1d53712745ce66dea0 git Not specified
CNA Linux Linux affected 97894f7d3c2966164516a8a5109674763d3a55e1 6abc7d5dcf0ee0f85e16e41c87fbd06231f28753 git Not specified
CNA Linux Linux affected 6.9 Not specified
CNA Linux Linux unaffected 6.9 semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.14 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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