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CVE-2026-43369

Estado: AnalizadaMedia (5.5)—

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

drm/amd: Fix NULL pointer dereference in device cleanup

When GPU initialization fails due to an unsupported HW block IP blocks may have a NULL version pointer. During cleanup in amdgpu_device_fini_hw, the code calls amdgpu_device_set_pg_state and amdgpu_device_set_cg_state which iterate over all IP blocks and access adev->ip_blocks[i].version without NULL checks, leading to a kernel NULL pointer dereference.

Add NULL checks for adev->ip_blocks[i].version in both amdgpu_device_set_cg_state and amdgpu_device_set_pg_state to prevent dereferencing NULL pointers during GPU teardown when initialization has failed.

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(cherry picked from commit b7ac77468cda92eecae560b05f62f997a12fe2f2)

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).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-43369",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "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": "fc58ef30e0a1524ce72a8e873d773ba3b0830c7d",
              "lessThan": "43025c941aced9a9009f9ff20eea4eb78c61deb8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6d7ac4a0ebb6b7bc885274aa8b2bd9971f07013c",
              "lessThan": "767cd24d3c4ae847688877def4891943f6611ecd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "39fc2bc4da0082c226cbee331f0a5d44db3997da",
              "lessThan": "062ea905fff7756b2e87143ffccaece5cdb44267",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_device.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18.16",
              "lessThan": "6.18.19",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.19.6",
              "lessThan": "6.19.9",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_device.c"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-05-08T15:16:47.960",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/062ea905fff7756b2e87143ffccaece5cdb44267",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/43025c941aced9a9009f9ff20eea4eb78c61deb8",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/767cd24d3c4ae847688877def4891943f6611ecd",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd: Fix NULL pointer dereference in device cleanup\n\nWhen GPU initialization fails due to an unsupported HW block\nIP blocks may have a NULL version pointer. During cleanup in\namdgpu_device_fini_hw, the code calls amdgpu_device_set_pg_state and\namdgpu_device_set_cg_state which iterate over all IP blocks and access\nadev->ip_blocks[i].version without NULL checks, leading to a kernel\nNULL pointer dereference.\n\nAdd NULL checks for adev->ip_blocks[i].version in both\namdgpu_device_set_cg_state and amdgpu_device_set_pg_state to prevent\ndereferencing NULL pointers during GPU teardown when initialization has\nfailed.\n\n(cherry picked from commit b7ac77468cda92eecae560b05f62f997a12fe2f2)"
    }
  ],
  "lastModified": "2026-06-17T10:49:28.177",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0CED11FB-4FAA-4224-93EC-23FC2358D4C7",
              "versionEndExcluding": "6.18.19",
              "versionStartIncluding": "6.18.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2CFC1CE8-19E1-4AFC-BF52-43BDD2561EE6",
              "versionEndExcluding": "6.19.9",
              "versionStartIncluding": "6.19.6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}