What is CVE-2026-46013?

CVE-2026-46013 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.19 onward and patched in 7.0.4 and 7.1-rc1. CVE-2026-46013 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46013?

CVE-2026-46013 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-46013?

Yes, CVE-2026-46013 has been patched. Fixed versions include 7.0.4 and 7.1-rc1. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46013 actively exploited?

CVE-2026-46013 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46013

In the Linux kernel, the following vulnerability has been resolved: mm/memfd_luo: fix physical address conversion in put_folios cleanup In memfd_luo_retrieve_folios()'s put_folios cleanup path: 1. kho_restore_folio() expects a phys_addr_t (physical address) but receives a raw PFN (pfolio->pfn). This causes kho_restore_page() to check the wrong physical address (pfn << PAGE_SHIFT instead of the actual physical address). 2. This loop lacks the !pfolio->pfn check that exists in the main retrieval loop and memfd_luo_discard_folios(), which could incorrectly process sparse file holes where pfn=0. Fix by converting PFN to physical address with PFN_PHYS() and adding the !pfolio->pfn check, matching the pattern used elsewhere in this file. This issue was identified by the AI review. https://sashiko.dev/#/patchset/[email protected]

Package Linux Kernel

Published 2026-05-27

Last modified 2026-05-27

Patch available

Yes

Affected versions

Linux kernel versions 6.19 and later are affected. Fixed in 7.0.4, 7.1-rc1 and their respective stable series.

Affected from

≥ 6.19

Fixed in

✓ 7.0.4 7.0.x ✓ 7.1-rc1

References

The following references provide additional information about CVE-2026-46013 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/3538f90ab89aaf302782b4b073a0aae66904cd67
Patch
Kernel patch commit
https://git.kernel.org/stable/c/bd0d6bde286a2b8e3ae7975b0dcc2d43875d5fc9
Patch

Frequently asked questions

What is CVE-2026-46013?

CVE-2026-46013 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.0.4 and 7.1-rc1. CVE-2026-46013 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-46013?

Yes — CVE-2026-46013 has been patched. Fixed versions include 7.0.4 and 7.1-rc1. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46013 actively exploited?

No — CVE-2026-46013 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.