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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- GNOME / libsoup0 – 3.6.5
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2025:23139
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2025:23437
- VENDOR_ADVISORYhttps://access.redhat.com/security/cve/CVE-2025-12105
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=2405992
- MISChttps://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/481
Updated 17m ago · 8 sources