Medium 5.5Published Jul 1, 2026

CVE-2026-53333mm/mincore: handle non-swap entries before !CONFIG_SWAP guard

Updated under an hour ago (Oct 26, 2026, 12:50 AM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jul 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1f2052755c152940c336918bd73d13d5468f548b before a8f91ddf67f669f547bb9fb559738da6f8ee2cf3; from 1f2052755c152940c336918bd73d13d5468f548b before 3481d4372ae34243f7025925314385b852c50f7e; 1f2052755c152940c336918bd73d13d5468f548b builds before 0c25b8734367574e21aeb8468c2e522713134da7	CNA record
linux linux_kernel linux:linux_kernel	from 6.18 before 6.18.36; from 6.19 before 7.0.13; 7.1; 7.1; 7.1; 7.1; 7.1; 7.1; and 1 more ranges	NVD

References

https://git.kernel.org/stable/c/a8f91ddf67f669f547bb9fb559738da6f8ee2cf3patch
https://git.kernel.org/stable/c/3481d4372ae34243f7025925314385b852c50f7epatch
https://git.kernel.org/stable/c/0c25b8734367574e21aeb8468c2e522713134da7patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.