SB20250226253 - Use-after-free in Linux kernel powerpc
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226253
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-2022-49666)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the arch_remove_linear_mapping() and arch_add_memory() functions in arch/powerpc/mm/mem.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/84d146fd35a01b08e9515041de60f0f915a417d5
- https://git.kernel.org/stable/c/89296ac435e2cf8a5101f7fab8f0c7b754b92052
- https://git.kernel.org/stable/c/ac790d09885d36143076e7e02825c541e8eee899
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.53
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19