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CVE-2026-74380

Estado: RecibidaAlta (8.8)—

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

gpu: host1x: Fix iommu_map_sgtable() return value check

Commit "iommu: return full error code from iommu_map_sg[_atomic]()" changed iommu_map_sgtable() to return an ssize_t and negative values in error cases, rather than a size_t and a zero.

pin_job() also was incorrectly assigning to 'int', which could cause overflows into negative values.

Update pin_job() to correctly check for errors from iommu_map_sgtable.

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.

Vulnerabilidad local (AV:L/PR:L) sin interacción de usuario que permite escalada de privilegios (S:C) en el kernel Linux mediante manejo incorrecto de valores de retorno en iommu_map_sgtable().

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

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationBehavior Prevention on Endpoint

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-2026-74380",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2
      }
    ]
  },
  "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": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b",
              "lessThan": "5f3985c2a500df3126cb12a2e0ccf26a40bc495d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b",
              "lessThan": "3ac173e46ef6fda9c9df8d47cdff4df962df9728",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b",
              "lessThan": "2a68928c445138961e2c451983b473aeb3f5b999",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "79240eee5a40014d9edfabe19f06b35ffa84e5f8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b",
              "lessThan": "e024c7993d839503d6c1f0044b8fc537c30300e9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b",
              "lessThan": "18f74762013a4b6aa6f905c4459e0f506f9c5c7b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/host1x/job.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.15",
              "versionType": "semver"
            },
            {
              "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": [
            "drivers/gpu/host1x/job.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:39.820",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/18f74762013a4b6aa6f905c4459e0f506f9c5c7b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2a68928c445138961e2c451983b473aeb3f5b999",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3ac173e46ef6fda9c9df8d47cdff4df962df9728",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5f3985c2a500df3126cb12a2e0ccf26a40bc495d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/79240eee5a40014d9edfabe19f06b35ffa84e5f8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e024c7993d839503d6c1f0044b8fc537c30300e9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpu: host1x: Fix iommu_map_sgtable() return value check\n\nCommit \"iommu: return full error code from iommu_map_sg[_atomic]()\"\nchanged iommu_map_sgtable() to return an ssize_t and negative values\nin error cases, rather than a size_t and a zero.\n\npin_job() also was incorrectly assigning to 'int', which could cause\noverflows into negative values.\n\nUpdate pin_job() to correctly check for errors from iommu_map_sgtable."
    }
  ],
  "lastModified": "2026-08-17T06:19:32.857",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}