CVE-2026-63953

In the Linux kernel, the following vulnerability has been resolved: mm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page When migrate_vma_insert_huge_pmd_page() jumps to unlock_abort due to a PMD check failure, the pgtable allocated earlier via pte_alloc_one() is never freed, causing a memory leak. Added free_abort label to release the pgtable in error path.

Package Linux Kernel
Published 2026-07-19
Last modified 2026-07-19
Patch available
Yes

Affected versions

Linux kernel versions 6.19 and later are affected. Fixed in 7.0.12, 7.1 and their respective stable series.

Affected from
≥ 6.19
Fixed in
✓ 7.0.12 7.0.x ✓ 7.1

References

2 total

Frequently asked questions

  • What is CVE-2026-63953?

    CVE-2026-63953 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.0.12 and 7.1. CVE-2026-63953 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-63953?

    Yes — CVE-2026-63953 has been patched. Fixed versions include 7.0.12 and 7.1. 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-2026-63953 actively exploited?

    No — CVE-2026-63953 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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