CVE-2026-80812 (GCVE-0-2026-80812)
Vulnerability from cvelistv5
Published
2026-09-04 15:13
Modified
2026-10-19 08:44
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: dummy: Check card index validity at probe snd_dummy_probe() blindly trusts that the given devptr->id value is within the proper card index range. It's OK for the devices the driver itself creates at the module probe time, but if the device is bound manually via sysfs interface, this could be -1 as "none", and this leads to OOB access for index[] and other parameters. Add a sanity check for the card index and warn/correct it if it's a value out of the range.
References
Impacted products
Vendor Product Version
Linux Linux Version: 6e65c1cc4458b2784224759b6137a50d4f65e610
Version: 6e65c1cc4458b2784224759b6137a50d4f65e610
Version: 6e65c1cc4458b2784224759b6137a50d4f65e610
Version: 6e65c1cc4458b2784224759b6137a50d4f65e610
Version: 6e65c1cc4458b2784224759b6137a50d4f65e610
Version: 6e65c1cc4458b2784224759b6137a50d4f65e610
Version: 6e65c1cc4458b2784224759b6137a50d4f65e610
Version: 6e65c1cc4458b2784224759b6137a50d4f65e610
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: dummy: Check card index validity at probe\n\nsnd_dummy_probe() blindly trusts that the given devptr-\u003eid value is\nwithin the proper card index range.  It\u0027s OK for the devices the\ndriver itself creates at the module probe time, but if the device is\nbound manually via sysfs interface, this could be -1 as \"none\", and\nthis leads to OOB access for index[] and other parameters.\n\nAdd a sanity check for the card index and warn/correct it if it\u0027s a\nvalue out of the range."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:44:05.644Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/02442d5fe8ee365a084b055d4fa81a0c1abfc3fd"
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      "title": "ALSA: dummy: Check card index validity at probe",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80812",
    "datePublished": "2026-09-04T15:13:32.732Z",
    "dateReserved": "2026-08-26T14:34:25.794Z",
    "dateUpdated": "2026-10-19T08:44:05.644Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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