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CVE-2026-72173

Estado: RecibidaSin puntuar—

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.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-72173",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "a30b48bf1b244f11bf9b6d20cdccfe0c2264130c",
              "lessThan": "319caaca072adc564ac9c5357ed013909f23d5ab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a30b48bf1b244f11bf9b6d20cdccfe0c2264130c",
              "lessThan": "cd1fc0e3c1f67c0c31dfc215e5d9b771133dedc0",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/proc/task_mmu.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.19",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/proc/task_mmu.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:21:35.460",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/319caaca072adc564ac9c5357ed013909f23d5ab",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cd1fc0e3c1f67c0c31dfc215e5d9b771133dedc0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/proc/task_mmu: do not warn on seeing non-migration pmd entry\n\nPatch series \"mm/hmm: A fix and a selftest\", v3.\n\nPatch 1 fixes a stale warning present from the time when only migration\nsoftleaf entries were supported at the PMD level.\n\nPatch 2 adds some code into hmm-tests.c which exercises the pagemap path\nfor PMD device-private entries.\n\n\nThis patch (of 2):\n\npagemap_pmd_range_thp() warns if a non-present PMD is not a migration\nentry.  This became false once device-private entries at the PMD level\nwere added.\n\nTherefore, remove the stale migration-only assertion."
    }
  ],
  "lastModified": "2026-08-17T06:18:17.793",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}