{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-89736",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89736",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:46:44.608Z",
    "updatedAt": "2026-10-19T08:51:50.340Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "usb: gadget: u_audio: Fix use-after-free on sound card disconnect",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: u_audio: Fix use-after-free on sound card disconnect\n\ng_audio_cleanup() invokes snd_card_free_when_closed() to initiate sound\ncard teardown and immediately frees the underlying struct snd_uac_chip\ncontext. However, snd_card_free_when_closed() returns asynchronously\nwhile ALSA control elements (kctls) remain open in userspace.\n\nWhen userspace control applications access or close these open file\ndescriptors, kctl callbacks attempt to dereference kctl->private_data\npointing to &uac->c_prm or &uac->p_prm within the freed uac structure,\nresulting in a use-after-free (UAF) memory corruption.\n\nFix this issue by deferring the destruction of struct snd_uac_chip until\nall references to the ALSA sound card are released. Register a custom\ncard->private_free callback (u_audio_card_free) during g_audio_setup()\nthat frees uac and its associated playback/capture request and ring\nbuffers only when the sound card reference count drops to zero.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "33f341c1fc60e172a3515c51bdabee11e83d1ee9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a7ecd1a04f4f485d7be6443d0f0b2c61a800cb82"
            },
            {
              "version": "b131989797f7287d7fdadb2bababc05a15d44750",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f983793f03148b097977f200298db215cd2d4438"
            },
            {
              "version": "3bc7324e4911351e39c54a62e6ca46321cb10faf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6f46762196f04464e1050a9ee94e72b917db9010"
            },
            {
              "version": "6c67ed9ad9b83e453e808f9b31a931a20a25629b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "891a8d11f4d5eb50b2ce7570f4f98204a7a57493"
            },
            {
              "version": "6c67ed9ad9b83e453e808f9b31a931a20a25629b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c74ff0b1a0fca53d3ac185873c87d6a719b30a47"
            },
            {
              "version": "6c67ed9ad9b83e453e808f9b31a931a20a25629b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4e747c864a88537e18b1ffc19a1954c9686bb8e1"
            },
            {
              "version": "6c67ed9ad9b83e453e808f9b31a931a20a25629b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "79a92896e2bb9471550c56fc23d8d93592f04c27"
            },
            {
              "version": "6c67ed9ad9b83e453e808f9b31a931a20a25629b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "858965947081d10d41d9a1010a540d3d5eea958b"
            },
            {
              "version": "3e016ef2e72da93a2ea7afbb45de1b481b44d761",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "3256e152b645fc1e788ba44c2d8ced690113e3e6",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "0eda2004f38d95ef5715d62be884cd344260535b",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "43ca70753dfffd517d2af126da28690f8f615605",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.10.177",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.270"
            },
            {
              "version": "5.15.105",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.221"
            },
            {
              "version": "6.1.22",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.188"
            },
            {
              "version": "4.14.312",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "4.19.280",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.4.240",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "6.2.9",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.3"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.3"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}