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 2026-08-17
Patch available
Yes

Affected versions

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

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

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. 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. 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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