PT-2026-44280 · Linux · Linux

Published 2026-05-28 · Updated 2026-05-28 · CVE-2026-46157

Mitre

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().

Related Identifiers

CVE-2026-46157

Affected Products

Linux

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-46157 · Security Note
• https://git.kernel.org/stable/c/49f9d048845be874df7997e4b1ce662de450c4b6 · Note
• https://git.kernel.org/stable/c/901ac0ff15edf9503162e2cf6579bd11a30f1ed4 · Note
• https://git.kernel.org/stable/c/6b01c1bc9a4748ab37548a700a8aaff910e298e6 · Note
• https://git.kernel.org/stable/c/ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1 · Note