SB2024070190 - Buffer overflow in Linux kernel bpf
Published: July 1, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024070190
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) Buffer overflow (CVE-ID: CVE-2021-47376)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the check_btf_line() 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/93937596e0652d50973f9dc944fea1694ac8cdfd
- https://git.kernel.org/stable/c/6345a0bee80139ea00a341c4202ebfd1534b5eb0
- https://git.kernel.org/stable/c/b5fe7cdfee5901ce5513c30e554d51536e003bde
- https://git.kernel.org/stable/c/0e6491b559704da720f6da09dd0a52c4df44c514
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.70
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.150