CVE-2026-68275

Estado: RecibidaSin puntuar—

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

drm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO

The AMDGPU_GEM_OP_GET_MAPPING_INFO path of amdgpu_gem_op_ioctl() looks up the bo_va for the buffer object in the caller's VM via amdgpu_vm_bo_find(), but uses the returned pointer without checking it.

amdgpu_vm_bo_find() returns NULL when the BO has no bo_va in that VM, which is the normal case for a BO that has never been mapped. The result is fed straight into amdgpu_vm_bo_va_for_each_valid_mapping(), which expands to list_for_each_entry(mapping, &(bo_va)->valids, list) and dereferences bo_va, causing a NULL pointer dereference.

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This is reachable by any process able to issue the ioctl (render group) simply by requesting mapping info for an unmapped BO.

Return -ENOENT when no bo_va is found, jumping to out_exec so the drm_exec context and GEM object reference are released.

(cherry picked from commit 528b19377affc1cc7362a70a254c1dda793595f9)

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.21%
Percentil entre todas las CVEs puntuadas: 10
Fecha de la puntuación: 6/10/2026

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 Kernel^AI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-68275",
  "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": "4d82724f7f2b847eb0454b1aab5450545b39abd4",
              "lessThan": "ddba17b3dfa0efc80d6c98621c2fb7af66adb622",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4d82724f7f2b847eb0454b1aab5450545b39abd4",
              "lessThan": "9faf4c66edb6bcb8ca0465c3a4868bb7f278cd31",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4d82724f7f2b847eb0454b1aab5450545b39abd4",
              "lessThan": "93475c34111916df71c63e510fc52db01351f809",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_gem.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"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.18",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:16.583",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/93475c34111916df71c63e510fc52db01351f809",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9faf4c66edb6bcb8ca0465c3a4868bb7f278cd31",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ddba17b3dfa0efc80d6c98621c2fb7af66adb622",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO\n\nThe AMDGPU_GEM_OP_GET_MAPPING_INFO path of amdgpu_gem_op_ioctl() looks\nup the bo_va for the buffer object in the caller's VM via\namdgpu_vm_bo_find(), but uses the returned pointer without checking it.\n\namdgpu_vm_bo_find() returns NULL when the BO has no bo_va in that VM,\nwhich is the normal case for a BO that has never been mapped. The result\nis fed straight into amdgpu_vm_bo_va_for_each_valid_mapping(), which\nexpands to list_for_each_entry(mapping, &(bo_va)->valids, list) and\ndereferences bo_va, causing a NULL pointer dereference.\n\nThis is reachable by any process able to issue the ioctl (render group)\nsimply by requesting mapping info for an unmapped BO.\n\nReturn -ENOENT when no bo_va is found, jumping to out_exec so the\ndrm_exec context and GEM object reference are released.\n\n(cherry picked from commit 528b19377affc1cc7362a70a254c1dda793595f9)"
    }
  ],
  "lastModified": "2026-08-17T05:18:30.090",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}