CVE-2026-46157

Full vulnerability record from the local CVENow database.
Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger Currently the runtime.oss.trigger field may be accessed concurrently without protection, which may lead to the data race. And, in this case, it may lead to more severe problem because it's a bit field; as writing the data, it may overwrite other bit fields as well, which confuses the operation completely, as spotted by fuzzing. Fix it by covering runtime.oss.trigger bit fled also with the existing params_lock mutex in both snd_pcm_oss_get_trigger() and snd_pcm_oss_poll().
Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-05-28 10:16:31.363000
Last modified
2026-10-30 13:18:56.587000
View original CVE JSON
{
  "id": "CVE-2026-46157",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-05-28T10:16:31.363",
  "lastModified": "2026-10-30T13:18:56.587",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger\n\nCurrently the runtime.oss.trigger field may be accessed concurrently\nwithout protection, which may lead to the data race.  And, in this\ncase, it may lead to more severe problem because it's a bit field; as\nwriting the data, it may overwrite other bit fields as well, which\nconfuses the operation completely, as spotted by fuzzing.\n\nFix it by covering runtime.oss.trigger bit fled also with the existing\nparams_lock mutex in both snd_pcm_oss_get_trigger() and\nsnd_pcm_oss_poll()."
    }
  ],
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              "versionType": "original_commit_for_fix",
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          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
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      "source": "[email protected]",
      "type": "Primary",
      "description": [
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