CVE-2026-96432

Name	CVE-2026-96432
Description	A malicious or compromised HTTP/2 server withholding SETTINGS ACK can send RST_STREAM on a completed stream, planting a null pointer, and then send a PUSH_PROMISE for that stream, causing a null pointer dereference in the QNetworkAccessManager class of the Qt Network module that crashes the application.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
qt6-base (PTS)	bookworm	6.4.2+dfsg-10	vulnerable
	trixie	6.8.2+dfsg-9+deb13u2	vulnerable
	forky	6.11.2+dfsg-5	vulnerable
	sid	6.11.2+dfsg-7	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
qt6-base	source	(unstable)	(unfixed)

Notes

https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-96432:
Fixed by: https://github.com/qt/qtbase/commit/156dcb4770d7f4747b973ba509f6df1933f64817 (v6.11.3)