drm/amdgpu/vce: fix integer overflow in image size

{
  "id": "32d45db358083c406afbccf127340bfa4930ac510d568ad3427cc67139666702",
  "url": "https://osv.dev/vulnerability/CVE-2026-68108",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/amdgpu/vce: fix integer overflow in image size",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vce: fix integer overflow in image size Fix a security vulnerability where malicious VCE command streams with oversized dimensions (e.g. 65536×65536) cause 32-bit integer overflow, wrapping the calculated buffer size to 0. This bypasses validation and allows GPU firmware to perform out-of-bound memory access. The fix uses 64-bit arithmetic to detect overflow and rejects invalid dimensions before they reach the hardware. V2: remove redundant check V3: modify max height value V4: remove size64 (cherry picked from commit cbe408dba581755ad1279a487ec786d8927d778d)",
    "evidence": "osv:CVE-2026-68108",
    "products": [
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        "name": {
          "value": "Kernel",
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        "prerequisites": [],
        "fixed_versions": [
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            "evidence": "/affected/1/ranges"
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          {
            "value": "6.12.101",
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          {
            "value": "6.18.42",
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          {
            "value": "7.1.6",
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        "affected_versions": []
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    "severity": "high",
    "structured": {
      "id": "CVE-2026-68108",
      "aliases": [
        "CVE-2026-68108"
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      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
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      ],
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            "ecosystem": "Linux"
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      ],
      "modified": "2026-10-28T02:30:28.117693283Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/00c311a13d225266800c712f2b7db2711c6897de",
        "https://git.kernel.org/stable/c/186bfdc4e26d019b2e7570cb121964a1d89b2e5b",
        "https://git.kernel.org/stable/c/7eebef042c12dfe0568593ee6a8926d16505925e",
        "https://git.kernel.org/stable/c/893db20383800cfe92e638705984eebb13bc81a5",
        "https://git.kernel.org/stable/c/a07430abd556de3707adfcadcc60db3fa64e4b2b",
        "https://git.kernel.org/stable/c/a6d7065b91a14790980ce6f4960db0ca8c3c9940",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68108.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-68108",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68108.json"
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    },
    "related_cves": [
      {
        "value": "CVE-2026-68108",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494909,
  "published_at": "2026-08-10T11:58:25.241+00:00"
}