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CVE-2026-80627

Estado: RecibidaSin puntuar—

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

MIPS: mm: Fix out-of-bounds write in maar_res_walk()

maar_res_walk() uses wi->num_cfg as the index into the fixed-size wi->cfg array, but checks whether the array is full only after it has filled the selected entry. If walk_system_ram_range() reports more than 16 memory ranges, the overflow call writes one struct maar_config past the end of the array before WARN_ON() prevents num_cfg from advancing.

Move the full-array check before taking the array slot and return non-zero when the scratch array is full, so walk_system_ram_range() terminates the walk instead of invoking the callback for further ranges.

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-2026-80627",
  "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": "a5718fe8f70f33b1b5b47a153057cfdd19684598",
              "lessThan": "a594100e147a6a67eb29189170f1df3645cda12b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598",
              "lessThan": "8b3e0c1c63015deaf084286899f5b2d0526715de",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598",
              "lessThan": "44c1d902cf0798b60762a7a98be992b9f5ded7dd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598",
              "lessThan": "ac7385af1dca86a5ea704c80ca4dc822083ff9e2",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "431812eb88c200bc3ec33b88782c8cc415842074",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "92f38fe85198ace9b211bc7712b7951acfb94560",
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              "lessThan": "1b001b16bc88f3f7817e228acfd91ee01bdcfcce",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/mips/mm/init.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/mips/mm/init.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-28T08:16:46.867",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/038f068cced8e9c49e8c419f3112d909ad366a3a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1b001b16bc88f3f7817e228acfd91ee01bdcfcce",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/431812eb88c200bc3ec33b88782c8cc415842074",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/44c1d902cf0798b60762a7a98be992b9f5ded7dd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8b3e0c1c63015deaf084286899f5b2d0526715de",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/92f38fe85198ace9b211bc7712b7951acfb94560",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a594100e147a6a67eb29189170f1df3645cda12b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ac7385af1dca86a5ea704c80ca4dc822083ff9e2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nMIPS: mm: Fix out-of-bounds write in maar_res_walk()\n\nmaar_res_walk() uses wi->num_cfg as the index into the fixed-size\nwi->cfg array, but checks whether the array is full only after it has\nfilled the selected entry. If walk_system_ram_range() reports more than\n16 memory ranges, the overflow call writes one struct maar_config past\nthe end of the array before WARN_ON() prevents num_cfg from advancing.\n\nMove the full-array check before taking the array slot and return non-zero\nwhen the scratch array is full, so walk_system_ram_range() terminates the\nwalk instead of invoking the callback for further ranges."
    }
  ],
  "lastModified": "2026-08-28T08:16:46.867",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}