SB2024062556 - Resource management error in Linux kernel kvm vmx
Published: June 25, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024062556
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) Resource management error (CVE-ID: CVE-2021-46978)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the nested_get_evmcs_page(), nested_get_vmcs12_pages() and nested_vmx_vmexit() functions in arch/x86/kvm/vmx/nested.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/c8bf64e3fb77cc19bad146fbe26651985b117194
- https://git.kernel.org/stable/c/200a45649ab7361bc80c70aebf7165b64f9a6c9f
- https://git.kernel.org/stable/c/bd0e8455b85b651a4c77de9616e307129b15aaa7
- https://git.kernel.org/stable/c/f5c7e8425f18fdb9bdb7d13340651d7876890329
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.38
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13