SB20250502130 - Use-after-free in Linux kernel kvm
Published: May 2, 2025 Updated: May 10, 2025
Security Bulletin ID
SB20250502130
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-2022-49882)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the kvm_gfn_to_pfn_cache_check(), kvm_gfn_to_pfn_cache_refresh(), kvm_gpc_activate() and EXPORT_SYMBOL_GPL() functions in virt/kvm/pfncache.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.