UBUNTU-CVE-2026-107590: Low severity ubuntu/qt6-5compat vulnerability
An out-of-bounds write vulnerability in the Qt QTextCodec iconv-based encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Under certain conditions, encoding text with QTextCodec may write outside an internal buffer. This can cause the application to crash and may affect data integrity.
Affected Software
Event History
Frequently Asked Questions
Which applications are exposed to this issue?
Applications using the Qt 5 Compatibility APIs module and encoding text through the iconv-based QTextCodec path may be exposed. The affected Ubuntu package identified here is ubuntu/qt6-5compat.
What is required to trigger the vulnerability?
The issue occurs under certain conditions while text is being encoded with QTextCodec. The available data does not identify the specific input, encoding, or configuration needed to reach the vulnerable path.
What could happen if the vulnerability is triggered?
An out-of-bounds write can cause the application to crash and may affect data integrity. The provided assessment indicates no confidentiality impact, low integrity impact, and high availability impact.