mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page

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Summary

CVECVE-2026-64129
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:54 UTC
Updated2026-07-19 16:17:54 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page When check_stable_address_space() fails after the PMD spinlock has been acquired via pmd_lock(), the code jumps directly to the abort label, bypassing the spin_unlock() call in unlock_abort. This causes the PMD spinlock to be permanently held, leading to a deadlock. Change the goto target from abort to unlock_abort to ensure the spinlock is always released on this error path.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a30b48bf1b244f11bf9b6d20cdccfe0c2264130c c715f7ccf7a294c058667b678a4ba50fad933c62 git Not specified
CNA Linux Linux affected a30b48bf1b244f11bf9b6d20cdccfe0c2264130c 63451de16e0a08be40f9ab5e7c5c8f5c79676fb1 git Not specified
CNA Linux Linux affected 6.19 Not specified
CNA Linux Linux unaffected 6.19 semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/c715f7ccf7a294c058667b678a4ba50fad933c62 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/63451de16e0a08be40f9ab5e7c5c8f5c79676fb1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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