SB20240531351 - Memory leak in Linux kernel cpufreq driver
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531351
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) Memory leak (CVE-ID: CVE-2021-47313)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the cppc_verify_policy(), cppc_cpufreq_stop_cpu() and cppc_cpufreq_cpu_init() functions in drivers/cpufreq/cppc_cpufreq.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/b775383355755885b19d2acef977f1ca132e80a3
- https://git.kernel.org/stable/c/e1b2b2b61d30d7ce057ec17237c217d152ed97f2
- https://git.kernel.org/stable/c/fe2535a44904a77615a3af8e8fd7dafb98fb0e1b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14