SB2024041854 - Denial of service in Linux kernel LBR
Published: April 18, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024041854
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-2023-52476)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition within the branch_type() and get_branch_type() functions in arch/x86/events/utils.c. A local user can trigger an out-of-bounds read error and crash the kernel.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/403d201d1fd144cb249836dafb222f6375871c6c
- https://git.kernel.org/stable/c/3863989497652488a50f00e96de4331e5efabc6c
- https://git.kernel.org/stable/c/f71edacbd4f99c0e12fe4a4007ab4d687d0688db
- https://git.kernel.org/stable/c/e53899771a02f798d436655efbd9d4b46c0f9265
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.137
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.59
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6