Use After Free in GNOME Libsoup
CVE-2025-12105
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.
Vulnerability class: Use-After-Free
EPSS: 0.004 (35.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Gnome Libsoup — versions 0
- Red Hat Enterprise Linux 10 — versions 0:3.6.5-3.el10_1.7
- Red Hat Enterprise Linux 10.0 Extended Update Support — versions 0:3.6.5-3.el10_0.10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat In-vehicle Operating System 1
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com
Frequently asked questions
- What is CVE-2025-12105?
- CVE-2025-12105 is a high-severity vulnerability in GNOME Libsoup, classified under Use After Free. CVSS score: 7.5/10. Published 2025-10-23.
- How severe is CVE-2025-12105?
- High severity. CVSS v3 base score is 7.5 out of 10.