SB2024042337 - Privilege escalation in Linux kernel bpf
Published: April 23, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024042337
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Race condition (CVE-ID: CVE-2024-26737)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition between the bpf_timer_cancel_and_free and bpf_timer_cancel calls in kernel/bpf/helpers.c. A local user can exploit the race and escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/5268bb02107b9eedfdcd51db75b407d10043368c
- https://git.kernel.org/stable/c/addf5e297e6cbf5341f9c07720693ca9ba0057b5
- https://git.kernel.org/stable/c/8327ed12e8ebc5436bfaa1786c49988894f9c8a6
- https://git.kernel.org/stable/c/7d80a9e745fa5b47da3bca001f186c02485c7c33
- https://git.kernel.org/stable/c/0281b919e175bb9c3128bd3872ac2903e9436e3f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.150
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.80
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8