SB2025031022 - Infinite loop in Linux kernel include asm
Published: March 10, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025031022
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Infinite loop (CVE-ID: CVE-2025-21839)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within the vcpu_enter_guest() function in arch/x86/kvm/x86.c, within the vmx_sync_dirty_debug_regs() and vmx_vcpu_run() functions in arch/x86/kvm/vmx/vmx.c, within the new_asid() and svm_vcpu_run() functions in arch/x86/kvm/svm/svm.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.