SB20250226301 - Use-after-free in Linux kernel cxl core driver
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226301
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-2022-49223)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the cxl_decoder_release() and cxl_decoder_alloc() functions 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/49f2dab77a5e1354f5da6ccdc9346a8212697be2
- https://git.kernel.org/stable/c/518bb96367123062b48b0a9842f2864249b565f6
- https://git.kernel.org/stable/c/74be98774dfbc5b8b795db726bd772e735d2edd4
- https://git.kernel.org/stable/c/b0022ca445d5fc4d0c89d15dcd0f855977b22c1d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.19