{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-46199",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-46199"
  ],
  "published": "2026-05-28T09:40:54Z",
  "summary": "drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg\n\nCheck bounds against the end of the BO whenever we access the msg.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
    }
  ],
  "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": "6.1.175",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46199"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/88411caee8f576d6b5abf6531232fcc0ce756dc5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c72a8b4dc6d598e3831ef3abd9c6527dfbf4810e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7688143ca62edeecacb3ba0a2cea129dbd262a18"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/63b51e8a9d54317d31cc3856c1e12407070d5fc2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3c817a60b09eaab926e475088e750936efcc95ae"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0a78f2bac1424deb7c9d5e09c6b8e849d8e8b648"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T13:16:28Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.1,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - The bug is reached only through the local DRM command-submission ioctl (DRM_IOCTL_AMDGPU_CS) on /dev/dri/renderD*; there is no network path to the GPU CS parser.\nAC:L - The attacker fully controls the decode-message contents (num_buffers, offset, size) and the BO size, so the out-of-bounds read is triggered deterministically with no race or uncontrolled condition.\nPR:L - The CS ioctl is DRM_RENDER_ALLOW, accessible to any unprivileged local user holding an fd to the render node; no root or special capability is required.\nUI:N - The attacker directly submits the crafted command buffer; no action by another user is needed.\nS:U - The OOB read is performed by the CPU within the kernel's own kmap of the BO; the impact stays within the kernel security authority with no IOMMU/VM boundary crossed.\nC:H - num_buffers and offset are attacker-controlled 32-bit values, producing an unbounded out-of-bounds read of kernel memory well beyond a few bytes, which per guidance is High.\nI:N - The flaw is purely an out-of-bounds read; no kernel memory is written or otherwise modified along the path.\nA:H - The unbounded OOB read into unmapped kernel memory triggers a page fault/oops, crashing the kernel."
    }
  }
}