SB20240603119 - NULL pointer dereference in Linux kernel kvm svm
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240603119
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-2021-47062)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the sev_launch_update_vmsa() function in arch/x86/kvm/svm/sev.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/bd0cced2ae93195668f983d443f7f17e8efd24d2
- https://git.kernel.org/stable/c/ba7bf5d6336aa9c0d977b161bfa420c56d46ee40
- https://git.kernel.org/stable/c/c36b16d29f3af5f32fc1b2a3401bf48f71cabee1
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13