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.
Problem types
Product status
Timeline
| 2025-10-23: | Reported to Red Hat. |
| 2025-10-23: | Made public. |
Credits
Red Hat would like to thank Eugene Mutavchi for reporting this issue.
References
access.redhat.com/security/cve/CVE-2025-12105
bugzilla.redhat.com/show_bug.cgi?id=2405992 (RHBZ#2405992)
