SB2025063096 - Denial of service in Trolltech Qt
Published: June 30, 2025 Updated: July 1, 2025
Security Bulletin ID
SB2025063096
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) Use-after-free (CVE-ID: CVE-2025-5991)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the QHttp2ProtocolHandler in the QtNetwork module. A remote attacker can trigger a race condition between QHttp2Stream HTTP POST uploads and simultaneous handling of HTTP error responses and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.