{
  "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-2025-40275",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40275",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-06T21:50:57.914Z",
    "updatedAt": "2026-05-11T21:46:11.980Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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": "ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd\n\nIn snd_usb_create_streams(), for UAC version 3 devices, the Interface\nAssociation Descriptor (IAD) is retrieved via usb_ifnum_to_if(). If this\ncall fails, a fallback routine attempts to obtain the IAD from the next\ninterface and sets a BADD profile. However, snd_usb_mixer_controls_badd()\nassumes that the IAD retrieved from usb_ifnum_to_if() is always valid,\nwithout performing a NULL check. This can lead to a NULL pointer\ndereference when usb_ifnum_to_if() fails to find the interface descriptor.\n\nThis patch adds a NULL pointer check after calling usb_ifnum_to_if() in\nsnd_usb_mixer_controls_badd() to prevent the dereference.\n\nThis issue was discovered by syzkaller, which triggered the bug by sending\na crafted USB device descriptor.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "status": "affected",
              "versionType": "git",
              "lessThan": "23aea9c74aeea2625aaf4fbcc6beb9d09e30f9e4"
            },
            {
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6"
            },
            {
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9f282104627be5fbded3102ff9004f753c55a063"
            },
            {
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2762d3ea9c929ca4094541ca517c317ffa94625b"
            },
            {
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "status": "affected",
              "versionType": "git",
              "lessThan": "57f607c112966c21240c424b33e2cb71e121dcf0"
            },
            {
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cbdbfc756f2990942138ed0138da9303b4dbf9ff"
            },
            {
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "status": "affected",
              "versionType": "git",
              "lessThan": "85568535893600024d7d8794f4f8b6428b521e0c"
            },
            {
              "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
              "status": "affected",
              "versionType": "git",
              "lessThan": "632108ec072ad64c8c83db6e16a7efee29ebfb74"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.18"
            },
            {
              "version": "5.4.302",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.247",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.197",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.159",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.117",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.59",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}