SB20240603182 - Reachable assertion in Linux kernel bpf
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240603182
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) Reachable assertion (CVE-ID: CVE-2023-52621)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to reachable assertion within the rcu_read_lock_held(), BPF_CALL_4() and BPF_CALL_2() functions in kernel/bpf/helpers.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/d6d6fe4bb105595118f12abeed4a7bdd450853f3
- https://git.kernel.org/stable/c/483cb92334cd7f1d5387dccc0ab5d595d27a669d
- https://git.kernel.org/stable/c/c7f1b6146f4a46d727c0d046284c28b6882c6304
- https://git.kernel.org/stable/c/169410eba271afc9f0fb476d996795aa26770c6d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.237
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.181
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.77
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8