vulnerability

Red Hat: CVE-2025-12105: libsoup: Heap Use-After-Free in libsoup message queue handling during HTTP/2 read completion (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Oct 23, 2025
Added
Dec 15, 2025
Modified
Dec 18, 2025

Description

A flaw was found in the asynchronous message queue handling of the libsoup library, widely used by GNOME and WebKit-based applications to manage HTTP/2 communications. When network operations are aborted at specific timing intervals, an internal message queue item may be freed twice due to missing state synchronization. This leads to a use-after-free memory access, potentially crashing the affected application. Attackers could exploit this behavior remotely by triggering specific HTTP/2 read and cancel sequences, resulting in a denial-of-service condition.

Solutions

redhat-upgrade-libsoup3redhat-upgrade-libsoup3-debuginforedhat-upgrade-libsoup3-debugsourceredhat-upgrade-libsoup3-develredhat-upgrade-libsoup3-doc
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