CVE-2021-47511

medium

Description

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.

References

https://git.kernel.org/stable/c/f96c0959c1ee92adc911c10d6ec209af50105049

https://git.kernel.org/stable/c/f12c8a7515f641885677960af450082569a87243

https://git.kernel.org/stable/c/be8869d388593e57223ad39297c8e54be632f2f2

https://git.kernel.org/stable/c/9d2479c960875ca1239bcb899f386970c13d9cfe

https://git.kernel.org/stable/c/8af815ab052eaf74addbbfb556d63ce2137c0e1b

https://git.kernel.org/stable/c/502e1146873d870f87da3b8f93d6bf2de5f38d0c

https://git.kernel.org/stable/c/02b2b691b77cd7b951fa7b6c9d44d4e472cdc823

https://git.kernel.org/stable/c/00a860678098fcd9fa8db2b5fb9d2ddf4776d4cc

Details

Source: Mitre, NVD

Published: 2024-05-24

Updated: 2024-11-04

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium