{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-80704",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-80704"
  ],
  "published": "2026-08-28T06:53:24Z",
  "summary": "drm/amd/display: use proper context for logging",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: use proper context for logging\n\nThe same as the rest of the code, get_ss_info_from_atombios() uses\ncalc_pll_cs->ctx->logger for logging. But calc_pll_cs->ctx is\ninitialized only later in calc_pll_max_vco_construct(). Therefore, any\noutput using DC_LOG_SYNC() leads to a NULL pointer deference in\nget_ss_info_from_atombios().\n\nAccording to Sashiko, the very same problem exists in\ndce112_get_pix_clk_dividers() and dcn3_get_pix_clk_dividers() too.\n\nTo avoid accessing the NULL context, use clk_src->base.ctx->logger\neverywhere. That context in base is initialized earlier in\ndce110_clk_src_construct() and dce112_clk_src_construct(). Before\nget_ss_info_from_atombios() or Sashiko's get_pix_clk_dividers functions\nabove are actually called. This is done by redefining DC_LOGGER to\nCTX->logger.\n\nBefore:\ndce110_clk_src_construct() did:\n -> sets clk_src->base.ctx = ctx;\n -> ss_info_from_atombios_create()\n   -> get_ss_info_from_atombios()   <- uses calc_pll_cs->ctx  # BOOM\n -> calc_pll_max_vco_construct()    <- sets calc_pll_cs->ctx\n\nAfter:\ndce110_clk_src_construct() does:\n -> sets clk_src->base.ctx = ctx;\n -> ss_info_from_atombios_create()\n   -> get_ss_info_from_atombios()   <- uses clk_src->base.ctx\n\n(cherry picked from commit 6f16fcbb0c46a87e3d9685407e906573d60104b0)",
  "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-2026-80704"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a94e62b7c7018fcfe0251e53fa96af30f12d923a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/02647d98340738f918690ed227fdcf154db1b84a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f556bc844cc4423e5ad41ae41a4c24f1cf75b978"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/114b42507b6a23d9d24e24e4ef165233332c64d4"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-28T06:53:24Z"
  }
}