High 7.8Published May 28, 2026

CVE-2026-46157ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger

Updated under an hour ago (Oct 27, 2026, 3:50 AM ET)

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Exploited in the last 30 days

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().

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c937a494901df8fbfaa5037a5883a7cd44282ea8; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 49f9d048845be874df7997e4b1ce662de450c4b6; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6b01c1bc9a4748ab37548a700a8aaff910e298e6; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 901ac0ff15edf9503162e2cf6579bd11a30f1ed4	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.12.1 before 6.12.88; from 6.13 before 6.18.30; from 6.19 before 7.0.7; 2.6.12; 2.6.12; 2.6.12; 2.6.12; 2.6.12; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/c937a494901df8fbfaa5037a5883a7cd44282ea8
https://git.kernel.org/stable/c/49f9d048845be874df7997e4b1ce662de450c4b6	patch
https://git.kernel.org/stable/c/ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1	patch
https://git.kernel.org/stable/c/6b01c1bc9a4748ab37548a700a8aaff910e298e6	patch
https://git.kernel.org/stable/c/901ac0ff15edf9503162e2cf6579bd11a30f1ed4	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.