SB2024071324 - Use-after-free in Linux kernel bpf
Published: July 13, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024071324
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) Use-after-free (CVE-ID: CVE-2024-40909)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the bpf_obj_get(), bpf_link_defer_dealloc_mult_rcu_gp() and bpf_link_free() functions in kernel/bpf/syscall.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/91cff53136daeff50816b0baeafd38a6976f6209
- https://git.kernel.org/stable/c/fa97b8fed9896f1e89cb657513e483a152d4c382
- https://git.kernel.org/stable/c/2884dc7d08d98a89d8d65121524bb7533183a63a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.35