SB20240531376 - NULL pointer dereference in Linux kernel regulator driver
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531376
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) NULL pointer dereference (CVE-ID: CVE-2021-47233)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the rt4801_enable() and rt4801_disable() functions in drivers/regulator/rt4801-regulator.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/ba8a26a7ce8617f9f3d6230de34b2302df086b41
- https://git.kernel.org/stable/c/dc68f0c9e4a001e02376fe87f4bdcacadb27e8a1
- https://git.kernel.org/stable/c/cb2381cbecb81a8893b2d1e1af29bc2e5531df27
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13