SB2024062221 - Use-after-free in Linux kernel x86 kvm
Published: June 22, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024062221
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-2021-47262)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the arch/x86/kvm/trace.h. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/796d3bd4ac9316e70c181189318cd2bd98af34bc
- https://git.kernel.org/stable/c/d046f724bbd725a24007b7e52b2d675249870888
- https://git.kernel.org/stable/c/9fb088ce13bc3c59a51260207b487db3e556f275
- https://git.kernel.org/stable/c/f31500b0d437a2464ca5972d8f5439e156b74960
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.44
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.126