SB20241022139 - Improper locking in Linux kernel virt kvm
Published: October 22, 2024 Updated: May 12, 2025
Security Bulletin ID
SB20241022139
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) Improper locking (CVE-ID: CVE-2024-47744)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the EXPORT_SYMBOL_GPL(), kvm_online_cpu(), hardware_disable_nolock(), hardware_disable_all_nolock(), hardware_enable_all() and kvm_suspend() functions in virt/kvm/kvm_main.c, within the cpus_read_lock() function in Documentation/virt/kvm/locking.rst. 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/4777225ec89f52bb9ca16a33cfb44c189f1b7b47
- https://git.kernel.org/stable/c/a2764afce521fd9fd7a5ff6ed52ac2095873128a
- https://git.kernel.org/stable/c/760a196e6dcb29580e468b44b5400171dae184d8
- https://git.kernel.org/stable/c/44d17459626052a2390457e550a12cb973506b2f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.54