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media: usbtv: keep device alive while ALSA card exists

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-90032

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-90032

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "63ddf68de52efaac40a9287e44266ac30e71dd36",
        "lessThan": "97b5e8b22b98e287481a97a9a4cfebbb348738a5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "63ddf68de52efaac40a9287e44266ac30e71dd36",
        "lessThan": "503be26ff888cb3576e55d251895d290e8146f27",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "63ddf68de52efaac40a9287e44266ac30e71dd36",
        "lessThan": "be0f7745f883386e5263b4e475686a81dfa87175",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "63ddf68de52efaac40a9287e44266ac30e71dd36",
        "lessThan": "67374e3a00814dcdd46e9feca61f69f7f2d81957",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "63ddf68de52efaac40a9287e44266ac30e71dd36",
        "lessThan": "239d1683e08b2aee2a15ef35706e1ea9a76681d8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "63ddf68de52efaac40a9287e44266ac30e71dd36",
        "lessThan": "7690a86b193271322cd31ab77349a87aa10858e4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "63ddf68de52efaac40a9287e44266ac30e71dd36",
        "lessThan": "1618257cb0aba4ce342ae8c0228368c24161f5fb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "63ddf68de52efaac40a9287e44266ac30e71dd36",
        "lessThan": "fc530fe168bb2b745a93f553ad21fc25fd9cba3d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/media/usb/usbtv/usbtv-audio.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.18"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.18",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.51",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/media/usb/usbtv/usbtv-audio.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-90032

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#36460 · Revision 1
Added to Heist Feed
Publisher date
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