{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-21956",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-21956"
  ],
  "published": "2025-04-01T15:46:27Z",
  "summary": "drm/amd/display: Assign normalized_pix_clk when color depth = 14",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Assign normalized_pix_clk when color depth = 14\n\n[WHY & HOW]\nA warning message \"WARNING: CPU: 4 PID: 459 at ... /dc_resource.c:3397\ncalculate_phy_pix_clks+0xef/0x100 [amdgpu]\" occurs because the\ndisplay_color_depth == COLOR_DEPTH_141414 is not handled. This is\nobserved in Radeon RX 6600 XT.\n\nIt is fixed by assigning pix_clk * (14 * 3) / 24 - same as the rests.\n\nAlso fixes the indentation in get_norm_pix_clk.\n\n(cherry picked from commit 274a87eb389f58eddcbc5659ab0b180b37e92775)",
  "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": "6.1.132",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-21956"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cca3ab74f90176099b6392e8e894b52b27b3d080"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0174a2e5770efee9dbd4b58963ed4d939298ff5e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0c0016712e5dc23ce4a7e673cbebc24a535d8c8a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dc831b38680c47d07e425871a9852109183895cf"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a8f77e1658d78e4a8bb227a83bcee67de97f7634"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/04f90b505ad3a6eed474bbaa03167095fef5203a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/27df30106690969f7d63604f0d49ed8e9bffa2cb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/79e31396fdd7037c503e6add15af7cb00633ea92"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}