CVE-2023-45935

Severity: medium (CVSS 4.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-03-27 · updated 2026-06-17
Weakness: CWE-476

Description

Qt 6 through 6.6 was discovered to contain a NULL pointer dereference via the function QXcbConnection::initializeAllAtoms(). NOTE: this is disputed because it is not expected that an X application should continue to run when there is arbitrary anomalous behavior from the X server.

References

http://seclists.org/fulldisclosure/2024/Jan/61
https://bugreports.qt.io/browse/QTBUG-115599
http://packetstormsecurity.com/files/176815/qt-6.6-6.5-6.2-Null-Pointer.html
http://seclists.org/fulldisclosure/2024/Jan/61
https://bugreports.qt.io/browse/QTBUG-115599

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