CVE-2021-47511

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix negative period/buffer sizes The period size calculation in OSS layer may receive a negative value as an error, but the code there assumes only the positive values and handle them with size_t. Due to that, a too big value may be passed to the lower layers. This patch changes the code to handle with ssize_t and adds the proper error checks appropriately.

• linux linux kernel (< 4.4.295) • linux linux kernel (>= 4.5 < 4.9.293) • linux linux kernel (>= 4.10 < 4.14.258) • linux linux kernel (>= 4.15 < 4.19.221) • linux linux kernel (>= 4.20 < 5.4.165) • linux linux kernel (>= 5.5 < 5.10.85) • linux linux kernel (>= 5.11 < 5.15.8) • linux linux kernel 5.16