Tracker / CVE-2022-49733
CVE-2022-49733
High 7.8
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC There is a small race window at snd_pcm_oss_sync() that is called from OSS PCM SNDCTL_DSP_SYNC ioctl; namely the function calls snd_pcm_oss_make_ready() at first, then takes the params_lock mutex for the rest. When the stream is set up again by another thread between them, it leads to inconsistency, and may result in unexpected results such as NULL dereference of OSS buffer as a fuzzer spotted recently. The fix is simply to cover snd_pcm_oss_make_ready() call into the same params_lock mutex with snd_pcm_oss_make_ready_locked() variant.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · … → 5.4.215 |
| linux | linux_kernel · 5.11 → 5.15.68 |
| linux | linux_kernel · 5.16 → 5.19.9 |
| linux | linux_kernel · 5.5 → 5.10.148 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.