SB2026021076 - Denial of service in FreeBSD blocklistd
Published: February 10, 2026
Security Bulletin ID
SB2026021076
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2026-2261)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due to the blocklistd(8) service leaks a socket descriptor for each adverse event report it receives. A remote attacker can perform a denial of service attack.
Remediation
Install update from vendor's website.