SB20240531224 - Out-of-bounds read in Linux kernel x86 kvm
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531224
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) Out-of-bounds read (CVE-ID: CVE-2021-47390)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the ioapic_write_indirect() function in arch/x86/kvm/ioapic.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/bebabb76ad9acca8858e0371e102fb60d708e25b
- https://git.kernel.org/stable/c/99a9e9b80f19fc63be005a33d76211dd23114792
- https://git.kernel.org/stable/c/2f9b68f57c6278c322793a06063181deded0ad69
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.71
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15