SB2024060864 - Information disclosure in Linux kernel x86 kvm
Published: June 8, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024060864
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2021-47255)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to information disclosure within the kvm_lapic_reg_read() function in arch/x86/kvm/lapic.c. A local user can gain access to sensitive information.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/bf99ea52970caeb4583bdba1192c1f9b53b12c84
- https://git.kernel.org/stable/c/018685461a5b9a9a70e664ac77aef0d7415a3fd5
- https://git.kernel.org/stable/c/a2aff09807fbe4018c269d3773a629949058b210
- https://git.kernel.org/stable/c/218bf772bddd221489c38dde6ef8e917131161f6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.128