{
  "cveId": "CVE-2021-47650",
  "url": "https://patchblox.com/security/cve/CVE-2021-47650",
  "summary": "CVE-2021-47650 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47650, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ASoC: soc-compress: prevent the potentially use...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ASoC: soc-compress: prevent the potentially use of null pointer  There is one call trace that snd_soc_register_card() -\u003Esnd_soc_bind_card()-\u003Esoc_init_pcm_runtime() -\u003Esnd_soc_dai_compress_new()-\u003Esnd_soc_new_compress(). In the trace the \u0027codec_dai\u0027 transfers from card-\u003Edai_link, and we can see from the snd_soc_add_pcm_runtime() in snd_soc_bind_card() that, if value of card-\u003Edai_link-\u003Enum_codecs is 0, then \u0027codec_dai\u0027 could be null pointer caused by index out of bound in \u0027asoc_rtd_to_codec(rtd, 0)\u0027. And snd_soc_register_card() is called by various platforms. Therefore, it is better to add the check in the case of misusing. And because \u0027cpu_dai\u0027 has already checked in soc_init_pcm_runtime(), there is no need to check again. Adding the check as follow, then if \u0027codec_dai\u0027 is null, snd_soc_new_compress() will not pass through the check \u0027if (playback \u002B capture != 1)\u0027, avoiding the leftover use of \u0027codec_dai\u0027.",
  "published": "2025-02-26T06:37:06Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00256,
  "epssPercentile": 0.17296,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.17.3-1",
      "fix": "DEBIAN-CVE-2021-47650",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47650",
      "released": "2025-02-26T06:37:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.17.3-1",
      "fix": "DEBIAN-CVE-2021-47650",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47650",
      "released": "2025-02-26T06:37:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.17.3-1",
      "fix": "DEBIAN-CVE-2021-47650",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47650",
      "released": "2025-02-26T06:37:06Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}