Description
A flaw was found in the soup_multipart_new_from_message() function of the libsoup HTTP library, which is commonly used by GNOME and other applications to handle web communications. The issue occurs when the library processes specially crafted multipart messages. Due to improper validation, an internal calculation can go wrong, leading to an integer underflow. This can cause the program to access invalid memory and crash. As a result, any application or server using libsoup could be forced to exit unexpectedly, creating a denial-of-service (DoS) risk.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | libsoup | ≤ 3.6.5 | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | libsoup2.4 | No fix yet | — |
| Debian 13 | libsoup3 | 3.6.5-2 | — |
| Debian 12 | libsoup3 +1 | No fix yet | — |
| Debian 11 | libsoup2.4 | 2.72.0-2+deb11u3 | DLA-4398-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | libsoup2.4 | 2.74.3-10.1ubuntu4 | — |
| Ubuntu 25.10 | libsoup2.4 | 2.74.3-10.1ubuntu4 | — |
| Ubuntu 25.10 | libsoup3 | 3.6.5-3 | — |
| Ubuntu 24.04 LTS | libsoup2.4 | 2.74.3-6ubuntu1.6 | USN-7643-1 |
| Ubuntu 24.04 LTS | libsoup3 | 3.4.4-5ubuntu0.5 | USN-7643-1 |
| Ubuntu 22.04 LTS | libsoup2.4 | 2.74.2-3ubuntu0.6 | USN-7643-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | libsoup3 | 3.0.7-0ubuntu1+esm5 | USN-7643-1 |
| Ubuntu Pro 20.04 LTS | libsoup2.4 | 2.70.0-1ubuntu0.5+esm1 | USN-7643-1 |
| Ubuntu Pro 18.04 LTS | libsoup2.4 | 2.62.1-1ubuntu0.4+esm6 | USN-7643-1 |
| Ubuntu Pro 16.04 LTS | libsoup2.4 | 2.52.2-1ubuntu0.3+esm5 | USN-7643-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | libsoup3 +2 | 3.6.5-3.el10_0.6 | RHSA-2025:8128 |
| RHEL 9 | libsoup +1 | 2.72.0-10.el9_6.2 | RHSA-2025:8126 |
| RHEL 8 | libsoup +1 | 2.62.3-9.el8_10 | RHSA-2025:8132 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.4 EUS | libsoup +1 | 2.72.0-8.el9_4.5 | RHSA-2025:8139 |
| RHEL 9.2 EUS | libsoup +1 | 2.72.0-8.el9_2.5 | RHSA-2025:8140 |
| RHEL 9.0 E4S | libsoup +1 | 2.72.0-8.el9_0.5 | RHSA-2025:8481 |
| RHEL 8.8 EUS | libsoup +1 | 2.62.3-3.el8_8.5 | RHSA-2025:8252 |
| RHEL 8.6 TUS | libsoup +1 | 2.62.3-2.el8_6.5 | RHSA-2025:8482 |
| RHEL 8.6 E4S | libsoup +1 | 2.62.3-2.el8_6.5 | RHSA-2025:8482 |
| RHEL 8.6 AUS | libsoup +1 | 2.62.3-2.el8_6.5 | RHSA-2025:8482 |
| RHEL 8.4 AUS | libsoup +1 | 2.62.3-2.el8_4.5 | RHSA-2025:8663 |
| RHEL 8.2 AUS | libsoup +1 | 2.62.3-1.el8_2.5 | RHSA-2025:8480 |
| RHEL 7 ELS | libsoup +1 | 2.62.2-6.el7_9 | RHSA-2025:21657, RHSA-2025:9179 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | libsoup3-doc | 3.6.5-3.el10_0.6 | ALSA-2025:8128 |
| AlmaLinux 9 | libsoup +1 | 2.72.0-10.el9_6.2 | ALSA-2025:8126 |
| AlmaLinux 8 | libsoup +1 | 2.62.3-9.el8_10 | ALSA-2025:8132 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | libsoup3 | 3.6.5-3.el10_0.6 | RLSA-2025:8128 |
| Rocky Linux 9 | libsoup | 2.72.0-10.el9_6.2 | RLSA-2025:8126 |
| Rocky Linux 8 | libsoup | 2.62.3-9.el8_10 | RLSA-2025:8132 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libsoup | 3.4.4-150600.3.10.1 | SUSE-SU-2025:01812-1 |
| SLES 15 SP7 | libsoup2 | 2.74.3-150600.4.9.1 | SUSE-SU-2025:01802-1 |
| SLES 15 SP6 | libsoup | 3.4.4-150600.3.10.1 | SUSE-SU-2025:01812-1 |
| SLES 15 SP6 | libsoup2 | 2.74.3-150600.4.9.1 | SUSE-SU-2025:01802-1 |
| SLES 15 SP5 | libsoup | 3.0.4-150400.3.10.1 | SUSE-SU-2025:01817-1 |
| SLES 15 SP5 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SLES 15 SP4 | libsoup | 3.0.4-150400.3.10.1 | SUSE-SU-2025:01817-1 |
| SLES 15 SP4 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SLES 15 SP3 | libsoup | 2.68.4-150200.4.9.1 | SUSE-SU-2025:01801-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | libsoup | 2.62.2-5.15.1 | SUSE-SU-2025:01794-1 |
| SLES for SAP 15 SP5 | libsoup | 3.0.4-150400.3.10.1 | SUSE-SU-2025:01817-1 |
| SLES for SAP 15 SP5 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SLES for SAP 15 SP4 | libsoup | 3.0.4-150400.3.10.1 | SUSE-SU-2025:01817-1 |
| SLES for SAP 15 SP4 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SLES for SAP 15 SP3 | libsoup | 2.68.4-150200.4.9.1 | SUSE-SU-2025:01801-1 |
| SLE Micro 6.1 | libsoup | 3.4.4-slfo.1.1_4.1 | SUSE-SU-2025:20598-1 |
| SLE Micro 6.0 | libsoup | 3.4.2-8.1 | SUSE-SU-2025:20453-1 |
| SLE Micro 5.5 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SLE Micro 5.4 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SLE Micro 5.3 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SLE Micro 5.2 | libsoup | 2.68.4-150200.4.9.1 | SUSE-SU-2025:01801-1 |
| SLE HPC 15 SP5 | libsoup | 3.0.4-150400.3.10.1 | SUSE-SU-2025:01817-1 |
| SLE HPC 15 SP5 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SLE HPC 15 SP4 | libsoup | 3.0.4-150400.3.10.1 | SUSE-SU-2025:01817-1 |
| SLE HPC 15 SP4 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SLE HPC 15 SP3 | libsoup | 2.68.4-150200.4.9.1 | SUSE-SU-2025:01801-1 |
| SUSE Manager Server 4.3 | libsoup | 3.0.4-150400.3.10.1 | SUSE-SU-2025:01817-1 |
| SUSE Manager Server 4.3 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SUSE Manager Proxy 4.3 | libsoup | 3.0.4-150400.3.10.1 | SUSE-SU-2025:01817-1 |
| SUSE Manager Proxy 4.3 | libsoup2 | 2.74.2-150400.3.9.1 | SUSE-SU-2025:01864-1 |
| SUSE Enterprise Storage 7.1 | libsoup | 2.68.4-150200.4.9.1 | SUSE-SU-2025:01801-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libsoup | 3.6.5-5.1 | openSUSE-SU-2025:15185-1 |
| openSUSE Tumbleweed | libsoup2 | 2.74.3-11.1 | openSUSE-SU-2025:15189-1 |
| openSUSE Leap 15.6 | libsoup | 3.4.4-150600.3.10.1 | SUSE-SU-2025:01812-1 |
| openSUSE Leap 15.6 | libsoup2 | 2.74.3-150600.4.9.1 | SUSE-SU-2025:01802-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libsoup +2 | 2.72.0-6.amzn2023.0.6 | ALAS2023-2025-997 |
| Amazon Linux 2023 | libsoup3 +2 | 3.6.5-49.amzn2023 | ALAS2023-2025-998 |
| Amazon Linux 2 | libsoup +1 | 2.56.0-6.amzn2.0.4 | ALAS2-2025-2874 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | libsoup | 3.4.4-9 | — |
| Azure Linux 2 (CBL-Mariner) | libsoup | 3.0.4-9 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | libsoup3 +2 | 3.6.5-3.el10_0.6 | ELSA-2025-8128 |
| Oracle Linux 9 | libsoup +1 | 2.72.0-10.el9_6.2 | ELSA-2025-8126 |
| Oracle Linux 8 | libsoup +1 | 2.62.3-9.el8_10 | ELSA-2025-8132 |
| Oracle Linux 7 | libsoup +1 | 2.62.2-2.0.5.el7 | ELSA-2025-21657, ELSA-2025-9179 |
Advisories 39
- ALSA-2025:8126 Important: libsoup security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:8128 Important: libsoup3 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:8132 Important: libsoup security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2025:9179 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8663 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8482 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8481 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8480 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8252 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8140 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8132 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8139 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8126 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:21657 Red Hat Security Advisory: libsoup security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:8128 Red Hat Security Advisory: libsoup3 security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- WID-SEC-2025-1140 Red Hat Enterprise Linux (libsoup): Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 29, 2026
- USN-7643-1 libsoup3, libsoup2.4 vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- openSUSE-SU-2025:15189-1 libsoup-2_4-1-2.74.3-11.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15185-1 libsoup-3_0-0-3.6.5-5.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20598-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20453-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01812-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01801-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01802-1 Security update for libsoup2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01794-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01864-1 Security update for libsoup2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:01817-1 Security update for libsoup SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2025-21657 Important: libsoup security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 10, 2025
- DLA-4398-1 libsoup2.4 - security update Debian Security (DSA / DLA) · Dec 9, 2025
- RLSA-2025:8128 Important: libsoup3 security update Rocky Linux Security Advisories · Oct 8, 2025
- RLSA-2025:8126 Important: libsoup security update Rocky Linux Security Advisories · Oct 7, 2025
- RLSA-2025:8132 Important: libsoup security update Rocky Linux Security Advisories · Jul 29, 2025
- ELSA-2025-9179 Important: libsoup security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 2, 2025
- ELSA-2025-8128 Important: libsoup3 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jun 26, 2025
- ALAS2-2025-2874 Important: libsoup security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 12, 2025
- ALAS2023-2025-997 Important: libsoup security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 10, 2025
- ALAS2023-2025-998 Important: libsoup3 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 10, 2025
- ELSA-2025-8126 Important: libsoup security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 26, 2025
- ELSA-2025-8132 Important: libsoup security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 26, 2025
References
- RHSA-2025:21657 vendor-advisory
- RHSA-2025:8126 vendor-advisory
- RHSA-2025:8128 vendor-advisory
- RHSA-2025:8132 vendor-advisory
- RHSA-2025:8139 vendor-advisory
- RHSA-2025:8140 vendor-advisory
- RHSA-2025:8252 vendor-advisory
- RHSA-2025:8480 vendor-advisory
- RHSA-2025:8481 vendor-advisory
- RHSA-2025:8482 vendor-advisory
- RHSA-2025:8663 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2025-4948 vdb-entry
- RHBZ#2367183 issue-tracking
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/449