SB2025121078 - Use-after-free in Linux kernel bpf
Published: December 10, 2025 Updated: December 12, 2025
Security Bulletin ID
SB2025121078
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-2023-53790)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the __alloc() function in kernel/bpf/memalloc.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/5d447e04290e78bdc1a3a6c321320d384e09c2f1
- https://git.kernel.org/stable/c/678ea18d6240299fd77d7000c8b1d7e5f274c8af
- https://git.kernel.org/stable/c/997849c4b969034e225153f41026657def66d286
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3