SB20260420132 - Fedora 42 update for coturn
Published: April 20, 2026
Security Bulletin ID
SB20260420132
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) Type conversion (CVE-ID: CVE-2026-40613)
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to incorrect type conversion or cast in the STUN attribute parser in src/client/ns_turn_msg.c when processing a crafted STUN message with odd-aligned attribute boundaries. A remote attacker can send a specially crafted UDP packet to cause a denial of service.
Only ARM64/AArch64 deployments with strict alignment enforcement are affected.
Remediation
Install update from vendor's website.