SB2022010105 - Heap-based buffer overflow in libbpf
Published: January 1, 2022 Updated: May 1, 2025
Security Bulletin ID
SB2022010105
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2021-45940)
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to a boundary error within the __bpf_object__open (called from bpf_object__open_mem and bpf-object-fuzzer.c). A remote attacker can create a specially crafted file, trick the victim into opening it, trigger heap-based buffer overflow and perform a denial of service attack.
Remediation
Install update from vendor's website.