#VU92005 Buffer overflow in Linux kernel - CVE-2021-47511
Published: June 13, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92005
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47511
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the snd_pcm_hw_param_value_min() and snd_pcm_oss_period_size() functions in sound/core/oss/pcm_oss.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/be8869d388593e57223ad39297c8e54be632f2f2
- https://git.kernel.org/stable/c/502e1146873d870f87da3b8f93d6bf2de5f38d0c
- https://git.kernel.org/stable/c/8af815ab052eaf74addbbfb556d63ce2137c0e1b
- https://git.kernel.org/stable/c/f96c0959c1ee92adc911c10d6ec209af50105049
- https://git.kernel.org/stable/c/f12c8a7515f641885677960af450082569a87243
- https://git.kernel.org/stable/c/02b2b691b77cd7b951fa7b6c9d44d4e472cdc823
- https://git.kernel.org/stable/c/00a860678098fcd9fa8db2b5fb9d2ddf4776d4cc
- https://git.kernel.org/stable/c/9d2479c960875ca1239bcb899f386970c13d9cfe
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.258
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.221
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.295
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.293
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.85
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.165