CVE-2026-53333

Summary

In 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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1f2052755c152940c336918bd73d13d5468f548b < a8f91ddf67f669f547bb9fb559738da6f8ee2cf3affected
LinuxLinux1f2052755c152940c336918bd73d13d5468f548b < 3481d4372ae34243f7025925314385b852c50f7eaffected
LinuxLinux1f2052755c152940c336918bd73d13d5468f548b < 0c25b8734367574e21aeb8468c2e522713134da7affected
LinuxLinux6.18affected
LinuxLinux0 < 6.18unaffected
LinuxLinux6.18.36 <= 6.18.*unaffected
LinuxLinux7.0.13 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References