SB20240531165 - Use-after-free in Linux kernel kvm
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531165
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2021-47061)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the kvm_io_bus_unregister_dev() function in virt/kvm/kvm_main.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343
- https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927
- https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d
- https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- 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