SB2024070354 - Improper privilege management in Linux kernel bpf
Published: July 3, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024070354
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) Improper privilege management (CVE-ID: CVE-2021-46908)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improperly imposed permissions within the adjust_ptr_min_max_vals() function in kernel/bpf/verifier.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/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6
- https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51
- https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.32
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12