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CVE-2025-12105— Libsoup: heap use-after-free in libsoup message queue handling during http/2 read completion

Quick assessment

Affected
GNOME libsoup
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libsoup是GNOME项目的一款GNOME的HTTP客户端/服务器库。 libsoup存在资源管理错误漏洞，该漏洞源于异步消息队列处理中缺少状态同步，可能导致释放后重用和拒绝服务攻击。

CVSS 7.5 · High EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 7

VendorProduct Version RangeStatus
GNOME libsoup ≤ 3.6.5 affected
Red Hat Red Hat Enterprise Linux 10 0:3.6.5-3.el10_1.7< * unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.6.5-3.el10_0.10< * unaffected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 any unaffected
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I. Basic Information for CVE-2025-12105

Vulnerability Information
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Vulnerability Title
Libsoup: heap use-after-free in libsoup message queue handling during http/2 read completion
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
libsoup 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libsoup是GNOME项目的一款GNOME的HTTP客户端/服务器库。 libsoup存在资源管理错误漏洞，该漏洞源于异步消息队列处理中缺少状态同步，可能导致释放后重用和拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNOME libsoup 0 ~ 3.6.5 -
Red Hat Red Hat Enterprise Linux 10 0:3.6.5-3.el10_1.7 ~ * cpe:/o:redhat:enterprise_linux:10.1
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.6.5-3.el10_0.10 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2025-12105

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III. Intelligence Information for CVE-2025-12105

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Patches & Fixes for CVE-2025-12105 (1)

Vendor Advisories for CVE-2025-12105 (2)

IV. Related Vulnerabilities

Same product: libsoup
Same vendor: GNOME
Same weakness: CWE-416

V. Comments for CVE-2025-12105

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