SB20240530170 - Use-after-free in Linux kernel cxl core driver
Published: May 30, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240530170
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-52771)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the grandparent() function in drivers/cxl/core/port.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/37179fcc916bce8c3cc7b36d67ef814cce55142b
- https://git.kernel.org/stable/c/6b2e428e673b3f55965674a426c40922e91388aa
- https://git.kernel.org/stable/c/8d2ad999ca3c64cb08cf6a58d227b9d9e746d708
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7