{
  "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-2026-43437",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43437",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-08T14:22:07.314Z",
    "updatedAt": "2026-10-19T19:26:36.663Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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: pcm: fix use-after-free on linked stream runtime in snd_pcm_drain()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: fix use-after-free on linked stream runtime in snd_pcm_drain()\n\nIn the drain loop, the local variable 'runtime' is reassigned to a\nlinked stream's runtime (runtime = s->runtime at line 2157).  After\nreleasing the stream lock at line 2169, the code accesses\nruntime->no_period_wakeup, runtime->rate, and runtime->buffer_size\n(lines 2170-2178) — all referencing the linked stream's runtime without\nany lock or refcount protecting its lifetime.\n\nA concurrent close() on the linked stream's fd triggers\nsnd_pcm_release_substream() → snd_pcm_drop() → pcm_release_private()\n→ snd_pcm_unlink() → snd_pcm_detach_substream() → kfree(runtime).\nNo synchronization prevents kfree(runtime) from completing while the\ndrain path dereferences the stale pointer.\n\nFix by caching the needed runtime fields (no_period_wakeup, rate,\nbuffer_size) into local variables while still holding the stream lock,\nand using the cached values after the lock is released.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9baee36e8c5443411c4629afabafaff8a46a23fd"
            },
            {
              "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f2cb2e0d27fb925c73a78f0ce7d6dbf68d3747c1"
            },
            {
              "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fc71f888994569f87d5bee20b1ac6c9c1e3a7a79"
            },
            {
              "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
              "status": "affected",
              "versionType": "git",
              "lessThan": "629cf09464cf98670996ea5c191dc9743e6f3f00"
            },
            {
              "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ae8f8d30d334bad5b1b3cdb1eb8a0b771f55e432"
            },
            {
              "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4a758e9a1f5ed722f83c4dd35f867fe811553bcb"
            },
            {
              "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c2f64e05a0587a83ec42dbd6b7a7ded79b2ff694"
            },
            {
              "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b1dbd69ba6f8f8c69bc7b77c2ce3b9c6ed05ba6"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.0"
            },
            {
              "version": "5.10.253",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.220",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.167",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.130",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.78",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.19",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}