SB2023070625 - Privilege escalation in Linux kernel netfilter
Published: July 6, 2023 Updated: October 24, 2025
Security Bulletin ID
SB2023070625
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-2023-3390)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within net/netfilter/nf_tables_api.c in the Linux kernel netfilter subsystem. A local user can trigger a use-after-fee error and escalate privileges on the system.
Remediation
Install update from vendor's website.