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CVE-2026-43437 ALSA: pcm: fix use-after-free on linked stream runtime in snd_pcm_drain()

🗓️ 08 May 2026 14:22:07Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 71 Views

ALSA pcm drain fixes use-after-free by caching linked stream runtime fields while holding the lock.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "sound/core/pcm_native.c"
    ],
    "versions": [
      {
        "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
        "lessThan": "9baee36e8c5443411c4629afabafaff8a46a23fd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
        "lessThan": "fc71f888994569f87d5bee20b1ac6c9c1e3a7a79",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
        "lessThan": "629cf09464cf98670996ea5c191dc9743e6f3f00",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
        "lessThan": "ae8f8d30d334bad5b1b3cdb1eb8a0b771f55e432",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
        "lessThan": "4a758e9a1f5ed722f83c4dd35f867fe811553bcb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
        "lessThan": "c2f64e05a0587a83ec42dbd6b7a7ded79b2ff694",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f2b3614cefb61ee6046a0aaee503ee37f227d310",
        "lessThan": "9b1dbd69ba6f8f8c69bc7b77c2ce3b9c6ed05ba6",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "sound/core/pcm_native.c"
    ],
    "versions": [
      {
        "version": "3.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.0",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.253",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.167",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.130",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.78",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.19",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.9",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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