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().
Affected products
linux: linux kernel
References6
- git.kernel.org/stable/c/49f9d048845be874df7997e4b1ce662de450c4b6 Patch
- git.kernel.org/stable/c/6b01c1bc9a4748ab37548a700a8aaff910e298e6 Patch
- git.kernel.org/stable/c/901ac0ff15edf9503162e2cf6579bd11a30f1ed4 Patch
- git.kernel.org/stable/c/ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1 Patch
- git.kernel.org/stable/c/c937a494901df8fbfaa5037a5883a7cd44282ea8
- git.kernel.org/stable/c/e718cecb73214f53fe8f48083eb7afe9b0921103
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 1 · as of 15 November 2026
- CWE
- CWE-362
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