{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-80576",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-80576"
  ],
  "published": "2026-08-26T14:37:59Z",
  "summary": "drm/amdgpu: reject oversized IBs with per-ring packet limits",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: reject oversized IBs with per-ring packet limits\n\nOn GFX rings, amdgpu_cs_p2_ib() passed user-supplied ib_bytes through\nto ib->length_dw without a limit, while ring_emit_ib() encodes length\ninto packet fields. Oversized values can corrupt adjacent control bits\nand destabilize command submission.\n\nAdd a per-ring IB packet size limit helper and reject command\nsubmissions exceeding the corresponding dword limit before IB\nallocation. Use the documented 20-bit limit for GFX/compute/SDMA/VPE,\nand apply the MM fallback limit for other ring types.\n\n(cherry picked from commit 7f48fa2cf62e3fa6c9c3870aa74988f773247e52)",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-80576"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6e164ba1057175fb8a370d8e05cbff5c57eac0c8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1474f3970d1afd303e12ff14d06808eabb371576"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/07fe270ec07c138a70afe7a81e115a85c35c545c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fd37f9dd5b5ab70a46fa7bc76623c0528d602b27"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-27T05:18:36Z"
  }
}