media: usbtv: keep device alive while ALSA card exists

{
  "id": "a806d4e8d8bb88d0f455ad0bb40b4eb79e11d1ccd0ffd773b6b63d31228daf9e",
  "url": "https://osv.dev/vulnerability/CVE-2026-90032",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "media: usbtv: keep device alive while ALSA card exists",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: media: usbtv: keep device alive while ALSA card exists The ALSA PCM callbacks store the driver state in pcm->private_data. An open PCM file can outlive USB disconnect because usbtv_audio_free() uses snd_card_free_when_closed(). The disconnect path can then drop the V4L2 device reference and free struct usbtv before ALSA releases the substream, so a later close dereferences freed memory in snd_usbtv_pcm_close(). Take a V4L2 device reference for the ALSA card and drop it from the card private_free callback. This keeps struct usbtv valid until ALSA has closed the remaining files and freed the card.",
    "evidence": "osv:CVE-2026-90032",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.270",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.221",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.188",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.157",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.12.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.51",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-90032",
      "aliases": [
        "CVE-2026-90032"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "63ddf68de52efaac40a9287e44266ac30e71dd36"
                },
                {
                  "fixed": "97b5e8b22b98e287481a97a9a4cfebbb348738a5"
                },
                {
                  "fixed": "503be26ff888cb3576e55d251895d290e8146f27"
                },
                {
                  "fixed": "be0f7745f883386e5263b4e475686a81dfa87175"
                },
                {
                  "fixed": "67374e3a00814dcdd46e9feca61f69f7f2d81957"
                },
                {
                  "fixed": "239d1683e08b2aee2a15ef35706e1ea9a76681d8"
                },
                {
                  "fixed": "7690a86b193271322cd31ab77349a87aa10858e4"
                },
                {
                  "fixed": "1618257cb0aba4ce342ae8c0228368c24161f5fb"
                },
                {
                  "fixed": "fc530fe168bb2b745a93f553ad21fc25fd9cba3d"
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              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90032.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.18.0"
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                {
                  "fixed": "5.10.270"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
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                {
                  "fixed": "5.15.221"
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              ]
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              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
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                  "fixed": "6.1.188"
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              ]
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.2.0"
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                  "fixed": "6.6.157"
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.110"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.51"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.19.0"
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              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90032.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.710166150Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1618257cb0aba4ce342ae8c0228368c24161f5fb",
        "https://git.kernel.org/stable/c/239d1683e08b2aee2a15ef35706e1ea9a76681d8",
        "https://git.kernel.org/stable/c/503be26ff888cb3576e55d251895d290e8146f27",
        "https://git.kernel.org/stable/c/67374e3a00814dcdd46e9feca61f69f7f2d81957",
        "https://git.kernel.org/stable/c/7690a86b193271322cd31ab77349a87aa10858e4",
        "https://git.kernel.org/stable/c/97b5e8b22b98e287481a97a9a4cfebbb348738a5",
        "https://git.kernel.org/stable/c/be0f7745f883386e5263b4e475686a81dfa87175",
        "https://git.kernel.org/stable/c/fc530fe168bb2b745a93f553ad21fc25fd9cba3d",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90032.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90032",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90032.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90032",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 502097,
  "published_at": "2026-09-16T10:33:33.197+00:00"
}