2.1

CVE-2025-5991

Use after free in QHttp2ProtocolHandler

There is a "Use After Free" vulnerability in Qt's QHttp2ProtocolHandler in the QtNetwork module. This only affects HTTP/2 handling, HTTP handling is not affected by this at all. This happens due to a race condition between how QHttp2Stream uploads the body of a
 POST request and the simultaneous handling of HTTP error responses.



This issue only affects Qt 6.9.0 and has been fixed for Qt 6.9.1.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerQt
≫
Produkt Qt
Default Statusunaffected
Version 0
Version < 6.9.0
Status unaffected
Version 6.9.0
Status affected
Version 6.9.1
Status unaffected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.021
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
a59d8014-47c4-4630-ab43-e1b13cbe58e3 2.1 0 0
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://codereview.qt-project.org/c/qt/qtbase/+/643777