md/raid1,raid10: fix error-path detection with md_cloned_bio()

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Summary

CVECVE-2026-74374
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:39 UTC
Updated2026-08-15 06:22:39 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: fix error-path detection with md_cloned_bio() Detect the error path using md_cloned_bio() instead of relying on r1_bio in raid1 or r10_bio->read_slot in raid10, which may be NULL or -1 after splitting and resubmitting a failed bio. As a result, the error path may not be recognized and memory allocations can incorrectly use GFP_NOIO instead of (GFP_NOIO | __GFP_HIGH), which can lead to a deadlock under memory pressure.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 689389a06ce79fdced85b5115717f71c71e623e0 20fb582c92fd64e5c8bd83c6176264b2794603b7 git Not specified
CNA Linux Linux affected 689389a06ce79fdced85b5115717f71c71e623e0 811545e0926d02a6a0b1a1258bb5544777c164d4 git Not specified
CNA Linux Linux affected 4.12 Not specified
CNA Linux Linux unaffected 4.12 semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/20fb582c92fd64e5c8bd83c6176264b2794603b7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/811545e0926d02a6a0b1a1258bb5544777c164d4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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