{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-46049",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-46049"
  ],
  "published": "2026-05-27T12:59:23Z",
  "summary": "ALSA: ctxfi: Add fallback to default RSR for S/PDIF",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ctxfi: Add fallback to default RSR for S/PDIF\n\nspdif_passthru_playback_get_resources() uses atc->pll_rate as the RSR\nfor the MSR calculation loop. However, pll_rate is only updated in\natc_pll_init() and not in hw_pll_init(), so it remains 0 after the\ncard init.\n\nWhen spdif_passthru_playback_setup() skips atc_pll_init() for\n32000 Hz, (rsr * desc.msr) always becomes 0, causing the loop to spin\nindefinitely.\n\nAdd fallback to use atc->rsr when atc->pll_rate is 0. This reflects\nthe hardware state, since hw_card_init() already configures the PLL\nto the default RSR.",
  "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-2026-46049"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d0b53842211f73a10ea174100a213f7fa14b9f33"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/615b7a5e5d8be68d52f262579906f7e015ba4606"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dfc00979ff00d9dfdfa1df32144a272ee2728102"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/25ded535ee261161bcf19dafd525c542e606559d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/30f9494c6f2b53a78822cfb653ffbb1d092d44c8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/09496158f6ebba8830593f8972035c02f97124c1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/95b1ee8442cabbde83b2848e7c6100df90f3a00d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7d61662197ecdc458e33e475b6ada7f6da61d364"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-06-15T02:03:26Z"
  }
}