CVE-2026-80966Medium· 5.5▾ SunlitA flaw was found in the ALSA portman2x4 driver of the Linux kernel. This vulnerability occurs because the driver does not properly validate the card index, specifically failing to check for negative ID values. A local attacker could exploi…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 5.8
none → medium
— → 5.8
none → medium
Last analysed / modified upstream
0.2% → 0.2%
— → 5.5
none → medium
A flaw was found in the ALSA portman2x4 driver of the Linux kernel. This vulnerability occurs because the driver does not properly validate the card index, specifically failing to check for negative ID values. A local attacker could exploit this by providing a negative ID value via sysfs, leading to an out-of-bounds memory access. This could potentially result in system instability or information disclosure.
kernel: ALSA: portman2x4: Check card index validity at probe — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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