SB20240603129 - Input validation error in Linux kernel kernel cpu
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240603129
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-2021-47430)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the setup_smap() function in arch/x86/kernel/cpu/common.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/f2447f6587b8ffe42ba04d14ce67d429a1163e5e
- https://git.kernel.org/stable/c/4e9ec1c65da98c293f75d83755dfa5e03075a6d0
- https://git.kernel.org/stable/c/3958b9c34c2729597e182cc606cc43942fd19f7c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.73
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15