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.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:0017-1 advisory.

    - CVE-2025-12105: Fixed heap use-after-free in message queue handling       during HTTP/2 read completion (bsc#1252555)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:4514-1 advisory.

    - CVE-2025-12105: Fixed heap use-after-free in message queue handling during HTTP/2 read completion     (bsc#1252555)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:23437 advisory.

    Libsoup is an HTTP library implementation in C. It was originally part of a SOAP (Simple Object Access     Protocol) implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate     packages.  libsoup uses the Glib main loop and is designed to work well with GTK applications. This     enables GNOME applications to access HTTP servers on the network in a completely asynchronous fashion,     very similar to the Gtk+ programming model (a synchronous operation mode is also supported for those who     want it), but the SOAP parts were removed long ago.

    Security Fix(es):

    * libsoup: Heap Use-After-Free in libsoup message queue handling during HTTP/2 read completion     (CVE-2025-12105)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.04 / 25.10 host has packages installed that are affected by a vulnerability as referenced in the USN-7932-1 advisory.

    It was discovered libsoup incorrectly handled memory when handling specific HTTP/2 read and cancel     sequences. An attacker could possibly use this issue to cause a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2025:23139 advisory.

    * libsoup: Heap Use-After-Free in libsoup message queue handling during HTTP/2 read completion     (CVE-2025-12105)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 10 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:23139 advisory.

    * libsoup: Heap Use-After-Free in libsoup message queue handling during HTTP/2 read completion     (CVE-2025-12105)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-23139 advisory.

    [3.6.5-7]
    - Add patch for CVE-2025-12105

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:23139 advisory.

    Libsoup is an HTTP library implementation in C. It was originally part of a SOAP (Simple Object Access     Protocol) implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate     packages.  libsoup uses the Glib main loop and is designed to work well with GTK applications. This     enables GNOME applications to access HTTP servers on the network in a completely asynchronous fashion,     very similar to the Gtk+ programming model (a synchronous operation mode is also supported for those who     want it), but the SOAP parts were removed long ago.

    Security Fix(es):

    * libsoup: Heap Use-After-Free in libsoup message queue handling during HTTP/2 read completion     (CVE-2025-12105)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1288 advisory.

    A flaw was found in the cookie date handling logic of the libsoup HTTP library, widely used by GNOME and     other applications for web communication. When processing cookies with specially crafted expiration dates,     the library may perform an out-of-bounds memory read. This flaw could result in unintended disclosure of     memory contents, potentially exposing sensitive information from the process using libsoup.
    (CVE-2025-11021)

    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. (CVE-2025-12105)

    A flaw was found in the cookie parsing logic of the libsoup HTTP library, used in GNOME applications and     other software. The vulnerability arises when processing the expiration date of cookies, where a specially     crafted value can trigger an integer overflow. This may result in undefined behavior, allowing an attacker     to bypass cookie expiration logic, causing persistent or unintended cookie behavior. The issue stems from     improper validation of large integer inputs during date arithmetic operations within the cookie parsing     routines. (CVE-2025-4945)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the libsoup package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2025-12105)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
281848	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : libsoup (SUSE-SU-2026:0017-1)	Nessus	SuSE Local Security Checks	high
279675	SUSE SLES15 Security Update : libsoup (SUSE-SU-2025:4514-1)	Nessus	SuSE Local Security Checks	critical
278994	RHEL 10 : libsoup3 (RHSA-2025:23437)	Nessus	Red Hat Local Security Checks	high
278750	Ubuntu 22.04 LTS / 24.04 LTS / 25.04 / 25.10 : libsoup vulnerability (USN-7932-1)	Nessus	Ubuntu Local Security Checks	high
278616	RockyLinux 10 : libsoup3 (RLSA-2025:23139)	Nessus	Rocky Linux Local Security Checks	high
278576	AlmaLinux 10 : libsoup3 (ALSA-2025:23139)	Nessus	Alma Linux Local Security Checks	high
278498	Oracle Linux 10 : libsoup3 (ELSA-2025-23139)	Nessus	Oracle Linux Local Security Checks	high
278390	RHEL 10 : libsoup3 (RHSA-2025:23139)	Nessus	Red Hat Local Security Checks	high
277816	Amazon Linux 2023 : libsoup3, libsoup3-devel (ALAS2023-2025-1288)	Nessus	Amazon Linux Local Security Checks	high
272272	Photon OS 5.0: Libsoup PHSA-2025-5.0-0666	Nessus	PhotonOS Local Security Checks	medium
271688	Linux Distros Unpatched Vulnerability : CVE-2025-12105	Nessus	Misc.	high

Detections

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CVE-2025-12105

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Tenable Plugins

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critical

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medium

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