What is CVE-2026-53333?

CVE-2026-53333 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.18 onward and patched in 6.18.36, 7.0.13 and 7.1. CVE-2026-53333 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-53333?

CVE-2026-53333 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-53333?

Yes, CVE-2026-53333 has been patched. Fixed versions include 6.18.36, 7.0.13 and 7.1. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-53333 actively exploited?

CVE-2026-53333 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-53333

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.

Package Linux Kernel

Published 2026-07-01

Last modified 2026-07-01

Patch available

Yes

Affected versions

Linux kernel versions 6.18 and later are affected. Fixed in 6.18.36, 7.0.13, 7.1 and their respective stable series.

Affected from

≥ 6.18

Fixed in

✓ 6.18.36 6.18.x ✓ 7.0.13 7.0.x ✓ 7.1

References

3 total

Frequently asked questions

What is CVE-2026-53333?

CVE-2026-53333 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.18 onward and has been patched in 6.18.36, 7.0.13 and 7.1. CVE-2026-53333 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-53333?

Yes — CVE-2026-53333 has been patched. Fixed versions include 6.18.36, 7.0.13 and 7.1. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-53333 actively exploited?

No — CVE-2026-53333 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.