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CVE-2026-80732

Estado: RecibidaAlta (7.8)—

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

ata: pata_sl82c105: fix bridge revision use-after-free

pci_get_slot() returns a referenced PCI device. Commit 44c10138fd4b ("PCI: Change all drivers to use pci_device->revision") replaced a configuration-space read with direct access to the cached revision field, but left that access after pci_dev_put(). The bridge may therefore be freed before its revision is read.

Read the revision before dropping the reference.

CVSS

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:L, PR:L: Acceso local con privilegios. Use-after-free en kernel Linux permite DoS o escalada. Revision leída tras liberación de referencia.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

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-2026-80732",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "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": "44c10138fd4bbc4b6d6bff0873c24902f2a9da65",
              "lessThan": "1268ca9418e2217f2b60705cf4a280b689b26678",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "44c10138fd4bbc4b6d6bff0873c24902f2a9da65",
              "lessThan": "a626dfca96041842053cf2d1efceb436c4cd8dcf",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "44c10138fd4bbc4b6d6bff0873c24902f2a9da65",
              "lessThan": "5ef87b1b4656d675440ceab32a56e69ad958d3a1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "44c10138fd4bbc4b6d6bff0873c24902f2a9da65",
              "lessThan": "fa0dca89b4fb0909ffda7b9ab6051af33270f95e",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "dc711fb137b33c12e6ca22b6a9c9b9f21d49e4de",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "a837deeaa37cc3f0e8c4e5c096787047f272c956",
              "versionType": "git"
            },
            {
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              "versionType": "git"
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            {
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              "lessThan": "7700a31039cdc6715cb6cce7e7a664ee4e945f67",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/ata/pata_sl82c105.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.23"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.23",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.152",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.104",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.45",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.9",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/ata/pata_sl82c105.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-03T13:06:11.900",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1268ca9418e2217f2b60705cf4a280b689b26678",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/56fd78c8c820f527f8003e379ab71004b2e79a44",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5ef87b1b4656d675440ceab32a56e69ad958d3a1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7700a31039cdc6715cb6cce7e7a664ee4e945f67",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a626dfca96041842053cf2d1efceb436c4cd8dcf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a837deeaa37cc3f0e8c4e5c096787047f272c956",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dc711fb137b33c12e6ca22b6a9c9b9f21d49e4de",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fa0dca89b4fb0909ffda7b9ab6051af33270f95e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nata: pata_sl82c105: fix bridge revision use-after-free\n\npci_get_slot() returns a referenced PCI device. Commit 44c10138fd4b\n(\"PCI: Change all drivers to use pci_device->revision\") replaced a\nconfiguration-space read with direct access to the cached revision field,\nbut left that access after pci_dev_put(). The bridge may therefore be freed\nbefore its revision is read.\n\nRead the revision before dropping the reference."
    }
  ],
  "lastModified": "2026-09-04T05:17:13.770",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}