SB20240702134 - Input validation error in Linux kernel firmware efi driver
Published: July 2, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240702134
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2021-47134)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the efi_get_fdt_params() function in drivers/firmware/efi/fdtparams.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/5148066edbdc89c6fe5bc419c31a5c22e5f83bdb
- https://git.kernel.org/stable/c/8a7e8b4e5631a03ea2fee27957857a56612108ca
- https://git.kernel.org/stable/c/668a84c1bfb2b3fd5a10847825a854d63fac7baa
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.43
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13