Riskcovery

CVE-2026-72173

fs/proc/task_mmu: do not warn on seeing non-migration pmd entry

State
Published
Severity
Not scored
Published
Aug 15, 2026
Updated
Aug 17, 2026
Reserved
Aug 9, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • a30b48bf1b244f11bf9b6d20cdccfe0c2264130c to before 319caaca072adc564ac9c5357ed013909f23d5abAffected
  • a30b48bf1b244f11bf9b6d20cdccfe0c2264130c to before cd1fc0e3c1f67c0c31dfc215e5d9b771133dedc0Affected
LinuxLinux
  • 6.19Affected
  • before 6.19Not affected
  • 7.1.5 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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