Use After Free Affecting libsoup3 package, versions <3.6.5-6


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.43% (35th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-LIBSOUP3-13720708
  • published26 Oct 2025
  • disclosed23 Oct 2025

Introduced: 23 Oct 2025

CVE-2025-12105  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Debian:unstable libsoup3 to version 3.6.5-6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup3 package and not the libsoup3 package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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 Base Scores

version 3.1