SB2025063097 - Incomplete cleanup in Trolltech Qt
Published: June 30, 2025
Security Bulletin ID
SB2025063097
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) Resource management error (CVE-ID: CVE-2025-6338)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the application during Schannel handling. For every connection made a 4KB file is created that is not cleaned up by the application or Qt. A remote attacker initiate multiple TLS connections with the server and perform a denial of service (DoS) attack by consuming all disk space.
Remediation
Install update from vendor's website.