SB2025092563 - Ubuntu update for net-tools
Published: September 25, 2025
Security Bulletin ID
SB2025092563
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2025-46836)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to certain network utilities (like ifconfig) from the net-tools package do not properly validate the structure of /proc files when showing interfaces. `get_name()` in `interface.c` copies interface labels from `/proc/net/dev` into a fixed 16-byte stack buffer without bounds checking, leading to possible arbitrary code execution or crash.
Remediation
Install update from vendor's website.