{
  "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-2026-23191",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-23191",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-02-14T16:27:18.882Z",
    "updatedAt": "2026-10-19T18:25:34.731Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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: aloop: Fix racy access at PCM trigger",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: aloop: Fix racy access at PCM trigger\n\nThe PCM trigger callback of aloop driver tries to check the PCM state\nand stop the stream of the tied substream in the corresponding cable.\nSince both check and stop operations are performed outside the cable\nlock, this may result in UAF when a program attempts to trigger\nfrequently while opening/closing the tied stream, as spotted by\nfuzzers.\n\nFor addressing the UAF, this patch changes two things:\n- It covers the most of code in loopback_check_format() with\n  cable->lock spinlock, and add the proper NULL checks.  This avoids\n  already some racy accesses.\n- In addition, now we try to check the state of the capture PCM stream\n  that may be stopped in this function, which was the major pain point\n  leading to UAF.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b1c73fc8e697eb73e23603e465e9af2711ed4183",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f57467114f40c5aacebbea96fb4ff9e5cd2b7f18"
            },
            {
              "version": "b1c73fc8e697eb73e23603e465e9af2711ed4183",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c99be0d5af02adebe9cb6f9869d20397fa9935a3"
            },
            {
              "version": "b1c73fc8e697eb73e23603e465e9af2711ed4183",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f3ce8be893726899e3053cf8059ecc95d8410359"
            },
            {
              "version": "b1c73fc8e697eb73e23603e465e9af2711ed4183",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0e6245b2424d126ac90018142d09f0707e12998b"
            },
            {
              "version": "b1c73fc8e697eb73e23603e465e9af2711ed4183",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bad15420050db1803767e58756114800cce91ea4"
            },
            {
              "version": "b1c73fc8e697eb73e23603e465e9af2711ed4183",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5727ccf9d19ca414cb76d9b647883822e2789c2e"
            },
            {
              "version": "b1c73fc8e697eb73e23603e465e9af2711ed4183",
              "status": "affected",
              "versionType": "git",
              "lessThan": "826af7fa62e347464b1b4e0ba2fe19a92438084f"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.37",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.37"
            },
            {
              "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": "6.12.70",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}