mm/mincore: handle non-swap entries before !CONFIG_SWAP guard

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Summary

CVECVE-2026-53333
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-01 14:16:41 UTC
Updated2026-07-01 14:16:41 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: mm/mincore: handle non-swap entries before !CONFIG_SWAP guard mincore_swap() also fields migration/hwpoison entries (and shmem swapin-error entries), which can exist on !CONFIG_SWAP builds when CONFIG_MIGRATION or CONFIG_MEMORY_FAILURE is enabled. The !IS_ENABLED(CONFIG_SWAP) guard ran before the non-swap-entry early return, so mincore_pte_range() can spuriously WARN and report these pages nonresident on !CONFIG_SWAP kernels. Move the guard below the non-swap-entry check so only true swap entries trip the WARN, and migration/hwpoison entries take the existing "uptodate / non-shmem" path.

Risk And Classification

EPSS: 0.001540000 probability, percentile 0.049670000 (date 2026-07-04)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 1f2052755c152940c336918bd73d13d5468f548b a8f91ddf67f669f547bb9fb559738da6f8ee2cf3 git Not specified
CNA Linux Linux affected 1f2052755c152940c336918bd73d13d5468f548b 3481d4372ae34243f7025925314385b852c50f7e git Not specified
CNA Linux Linux affected 1f2052755c152940c336918bd73d13d5468f548b 0c25b8734367574e21aeb8468c2e522713134da7 git Not specified
CNA Linux Linux affected 6.18 Not specified
CNA Linux Linux unaffected 6.18 semver Not specified
CNA Linux Linux unaffected 6.18.36 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.13 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0c25b8734367574e21aeb8468c2e522713134da7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a8f91ddf67f669f547bb9fb559738da6f8ee2cf3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3481d4372ae34243f7025925314385b852c50f7e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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