CVE-2026-72173

In the Linux kernel, the following vulnerability has been resolved: fs/proc/task_mmu: do not warn on seeing non-migration pmd entry Patch series "mm/hmm: A fix and a selftest", v3. Patch 1 fixes a stale warning present from the time when only migration softleaf entries were supported at the PMD level. Patch 2 adds some code into hmm-tests.c which exercises the pagemap path for PMD device-private entries. This patch (of 2): pagemap_pmd_range_thp() warns if a non-present PMD is not a migration entry. This became false once device-private entries at the PMD level were added. Therefore, remove the stale migration-only assertion.

Package Linux Kernel
Published 2026-08-15
Last modified 2026-08-15
Patch available
Yes

Affected versions

Linux kernel versions 6.19 and later are affected. Fixed in 7.1.5, 7.2-rc1 and their respective stable series.

Affected from
≥ 6.19
Fixed in
✓ 7.1.5 7.1.x ✓ 7.2-rc1

References

2 total

Frequently asked questions

  • What is CVE-2026-72173?

    CVE-2026-72173 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.1.5 and 7.2-rc1. CVE-2026-72173 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-72173?

    Yes. CVE-2026-72173 has been patched. Fixed versions include 7.1.5 and 7.2-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-2026-72173 actively exploited?

    No. CVE-2026-72173 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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