SB20250226304 - Use-after-free in Linux kernel platforms pseries
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226304
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-2022-49196)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the remove_phb_dynamic() function in arch/powerpc/platforms/pseries/pci_dlpar.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/33d39efb61a84e055ca2386157d39ebbdf6b7d31
- https://git.kernel.org/stable/c/403f9e0bc5535a0a5184d1352fa3a70e6ffacb6f
- https://git.kernel.org/stable/c/895ca4ae1f72e0a0160ab162723e59c9f265ec93
- https://git.kernel.org/stable/c/fe2640bd7a62f1f7c3f55fbda31084085075bc30
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.33
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18