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CVE-2025-40353

Estado: AplazadaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

arm64: mte: Do not warn if the page is already tagged in copy_highpage()

The arm64 copy_highpage() assumes that the destination page is newly allocated and not MTE-tagged (PG_mte_tagged unset) and warns accordingly. However, following commit 060913999d7a ("mm: migrate: support poisoned recover from migrate folio"), folio_mc_copy() is called before __folio_migrate_mapping(). If the latter fails (-EAGAIN), the copy will be done again to the same destination page. Since copy_highpage() already set the PG_mte_tagged flag, this second copy will warn.

Leer descripción completaMostrar menos

Replace the WARN_ON_ONCE(page already tagged) in the arm64 copy_highpage() with a comment.

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-2025-40353",
  "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": "060913999d7a9e50c283fdb15253fc27974ddadc",
              "lessThan": "5ff5765a1fc526f07d3bbaedb061d970eb13bcf4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "060913999d7a9e50c283fdb15253fc27974ddadc",
              "lessThan": "0bbf3fc6e9211fce9889fe8efbb89c220504d617",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "060913999d7a9e50c283fdb15253fc27974ddadc",
              "lessThan": "b98c94eed4a975e0c80b7e90a649a46967376f58",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/arm64/mm/copypage.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.56",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.6",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/arm64/mm/copypage.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-16T14:15:47.203",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0bbf3fc6e9211fce9889fe8efbb89c220504d617",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5ff5765a1fc526f07d3bbaedb061d970eb13bcf4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b98c94eed4a975e0c80b7e90a649a46967376f58",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: mte: Do not warn if the page is already tagged in copy_highpage()\n\nThe arm64 copy_highpage() assumes that the destination page is newly\nallocated and not MTE-tagged (PG_mte_tagged unset) and warns\naccordingly. However, following commit 060913999d7a (\"mm: migrate:\nsupport poisoned recover from migrate folio\"), folio_mc_copy() is called\nbefore __folio_migrate_mapping(). If the latter fails (-EAGAIN), the\ncopy will be done again to the same destination page. Since\ncopy_highpage() already set the PG_mte_tagged flag, this second copy\nwill warn.\n\nReplace the WARN_ON_ONCE(page already tagged) in the arm64\ncopy_highpage() with a comment."
    }
  ],
  "lastModified": "2026-06-17T09:21:42.377",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}