CVE-2026-46006 (GCVE-0-2026-46006)
Vulnerability from cvelistv5
Published
2026-05-27 12:56
Modified
2026-06-14 17:47
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix u32 overflow in pushbuf reloc bounds check nouveau_gem_pushbuf_reloc_apply() validates each relocation with if (r->reloc_bo_offset + 4 > nvbo->bo.base.size) but reloc_bo_offset is __u32 (uapi/drm/nouveau_drm.h) and the integer literal 4 promotes to unsigned int, so the addition is performed in 32 bits and wraps before the comparison against the size_t bo size. Cast to u64 so the addition happens in 64-bit arithmetic. [ Add Fixes: tag. - Danilo ]
Impacted products
Vendor Product Version
Linux Linux Version: a1606a9596e54da90ad6209071b357a4c1b0fa82
Version: a1606a9596e54da90ad6209071b357a4c1b0fa82
Version: a1606a9596e54da90ad6209071b357a4c1b0fa82
Version: a1606a9596e54da90ad6209071b357a4c1b0fa82
Version: a1606a9596e54da90ad6209071b357a4c1b0fa82
Version: a1606a9596e54da90ad6209071b357a4c1b0fa82
Version: a1606a9596e54da90ad6209071b357a4c1b0fa82
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{
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau: fix u32 overflow in pushbuf reloc bounds check\n\nnouveau_gem_pushbuf_reloc_apply() validates each relocation with\n\n    if (r-\u003ereloc_bo_offset + 4 \u003e nvbo-\u003ebo.base.size)\n\nbut reloc_bo_offset is __u32 (uapi/drm/nouveau_drm.h) and the integer\nliteral 4 promotes to unsigned int, so the addition is performed in 32\nbits and wraps before the comparison against the size_t bo size.\n\nCast to u64 so the addition happens in 64-bit arithmetic.\n\n[ Add Fixes: tag. - Danilo ]"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T17:47:33.579Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/573a1104bd36e49c067a9dc62e7c476d5ee7e92a"
        },
        {
          "url": "https://git.kernel.org/stable/c/45a45184b9c0b0b26ead06e370cda2073616a7cc"
        },
        {
          "url": "https://git.kernel.org/stable/c/fa297e919d1680c38ab268ff952b1698dac987f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d749a9a0ee4014681487e7ae549901aa8c176637"
        },
        {
          "url": "https://git.kernel.org/stable/c/332884f5eb79dd60a7162b079d09d39208567a31"
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        {
          "url": "https://git.kernel.org/stable/c/e441d5c23ec644c8d27593db3b8928e8933512a9"
        },
        {
          "url": "https://git.kernel.org/stable/c/2fc87d37be1b730a149b035f9375fdb8cc5333a5"
        }
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      "title": "drm/nouveau: fix u32 overflow in pushbuf reloc bounds check",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46006",
    "datePublished": "2026-05-27T12:56:05.273Z",
    "dateReserved": "2026-05-13T15:03:33.092Z",
    "dateUpdated": "2026-06-14T17:47:33.579Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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