Copyright © 2012 Red Hat, Inc. All rights reserved. Low 2026-07-01T00:00:00 kernel: mm/mincore: handle non-swap entries before !CONFIG_SWAP guard 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CWE-393

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.

A flaw was found in the Linux kernel's memory management (mm/mincore). This vulnerability occurs when handling non-swap memory entries, particularly in systems configured without swap. An issue in the `mincore_pte_range()` function can cause the system to incorrectly report certain memory pages as nonresident, leading to spurious warnings. This could potentially impact system stability or lead to misdiagnosis of memory conditions.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Out of support scope kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-53333 https://nvd.nist.gov/vuln/detail/CVE-2026-53333 https://lore.kernel.org/linux-cve-announce/2026070143-CVE-2026-53333-082a@gregkh/T