#VU93147 Buffer overflow in Linux kernel - CVE-2021-47348
Published: June 24, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93147
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47348
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 perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the validate_bksv() function in drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e
- https://git.kernel.org/stable/c/44c7c901cb368a9f2493748f213b247b5872639f
- https://git.kernel.org/stable/c/3b2b93a485fb7a970bc8b5daef16f4cf579d172f
- https://git.kernel.org/stable/c/06888d571b513cbfc0b41949948def6cb81021b2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.51
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.18
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14