SB2025050450 - NULL pointer dereference in Linux kernel kvm vmx
Published: May 4, 2025 Updated: May 10, 2025
Security Bulletin ID
SB2025050450
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) NULL pointer dereference (CVE-ID: CVE-2022-49932)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the vmx_cleanup_l1d_flush() and vmx_init() functions in arch/x86/kvm/vmx/vmx.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/e136e969d268b9b89329c816c002e53f60e82985
- https://git.kernel.org/stable/c/e28533c08023c4b319b7f2cd77f3f7c9204eb517
- https://git.kernel.org/stable/c/e32b120071ea114efc0b4ddd439547750b85f618
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3