Description
A flaw was found in libsoup. The libsoup soup_uri_decode_data_uri() function may crash when processing malformed data URI. This flaw allows an attacker to cause a denial of service (DoS).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | libsoup | < 3.6.1 | 3.6.1 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
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 | libsoup3 | 3.6.1-1 | — |
| Debian 12 | libsoup3 | 3.2.3-0+deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | libsoup2.4 | 2.74.3-6ubuntu1.2 | USN-7432-1 |
| Ubuntu 24.04 LTS | libsoup3 | 3.4.4-5ubuntu0.2 | USN-7432-1 |
| Ubuntu 22.04 LTS | libsoup2.4 | 2.74.2-3ubuntu0.2 | USN-7432-1 |
| Ubuntu 20.04 LTS | libsoup2.4 | 2.70.0-1ubuntu0.2 | USN-7432-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | libsoup3 | 3.0.7-0ubuntu1+esm2 | USN-7432-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libsoup | 3.4.4-150600.3.7.1 | SUSE-SU-2025:01504-1 |
| SLES 15 SP6 | libsoup | 3.4.4-150600.3.7.1 | SUSE-SU-2025:1504-1 |
| SLES 15 SP5 | libsoup | 3.0.4-150400.3.7.1 | SUSE-SU-2025:1510-1 |
| SLES 15 SP4 | libsoup | 3.0.4-150400.3.7.1 | SUSE-SU-2025:1510-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | libsoup | 3.0.4-150400.3.7.1 | SUSE-SU-2025:1510-1 |
| SLES for SAP 15 SP4 | libsoup | 3.0.4-150400.3.7.1 | SUSE-SU-2025:1510-1 |
| SLE Micro 6.1 | libsoup | 3.4.4-slfo.1.1_3.1 | SUSE-SU-2025:20446-1 |
| SLE Micro 6.0 | libsoup | 3.4.2-6.1 | SUSE-SU-2025:20375-1 |
| SLE HPC 15 SP5 | libsoup | 3.0.4-150400.3.7.1 | SUSE-SU-2025:1510-1 |
| SLE HPC 15 SP4 | libsoup | 3.0.4-150400.3.7.1 | SUSE-SU-2025:1510-1 |
| SUSE Manager Server 4.3 | libsoup | 3.0.4-150400.3.7.1 | SUSE-SU-2025:1510-1 |
| SUSE Manager Proxy 4.3 | libsoup | 3.0.4-150400.3.7.1 | SUSE-SU-2025:1510-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | libsoup | 3.4.4-150600.3.7.1 | SUSE-SU-2025:1504-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libsoup3 +2 | 3.6.5-47.amzn2023 | ALAS2023-2025-941 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | libsoup | 3.4.4-6 | — |
| Azure Linux 2 (CBL-Mariner) | libsoup | 3.0.4-6 | — |
Advisories 7
- USN-7432-1 libsoup2.4, libsoup3 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- SUSE-SU-2025:20446-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20375-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:01504-1 Security update for libsoup SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1504-1 Security update for libsoup SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1510-1 Security update for libsoup SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2025-941 Important: libsoup3 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 2, 2025