Vulnerability · Published May 21, 2025 · Assigned by redhat
CVE-2025-4969Libsoup: off-by-one out-of-bounds read in find_boundary() in soup-multipart.c
Medium 6.5
In plain English
A medium-severity out-of-bounds read in libsoup. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A vulnerability was found in the libsoup package. This flaw stems from its failure to correctly verify the termination of multipart HTTP messages. This can allow a remote attacker to send a specially crafted multipart HTTP body, causing the libsoup-consuming server to read beyond its allocated memory boundaries (out-of-bounds read).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libsoup2.4 | no fix listed | DEBIAN-CVE-2025-4969 |
| Debian:13 | libsoup2.4 | no fix listed | DEBIAN-CVE-2025-4969 |
| Debian:12 | libsoup3 | no fix listed | DEBIAN-CVE-2025-4969 |
| Debian:13 | libsoup3 | 3.6.5-2 | DEBIAN-CVE-2025-4969 |
| Ubuntu:22.04:LTS | libsoup2.4 | 2.74.2-3ubuntu0.6 | USN-7643-1 |
| Ubuntu:22.04:LTS | libsoup2.4 | 2.74.2-3ubuntu0.6 | UBUNTU-CVE-2025-4969 |
| Ubuntu:24.04:LTS | libsoup2.4 | 2.74.3-6ubuntu1.6 | UBUNTU-CVE-2025-4969 |
| Ubuntu:24.04:LTS | libsoup2.4 | 2.74.3-6ubuntu1.6 | USN-7643-1 |
| Ubuntu:25.10 | libsoup2.4 | 2.74.3-10.1ubuntu4 | UBUNTU-CVE-2025-4969 |
| Ubuntu:26.04:LTS | libsoup2.4 | 2.74.3-10.1ubuntu4 | UBUNTU-CVE-2025-4969 |
| Ubuntu:24.04:LTS | libsoup3 | 3.4.4-5ubuntu0.5 | UBUNTU-CVE-2025-4969 |
| Ubuntu:24.04:LTS | libsoup3 | 3.4.4-5ubuntu0.5 | USN-7643-1 |
| Ubuntu:25.10 | libsoup3 | 3.6.5-3 | UBUNTU-CVE-2025-4969 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| libsoup | 0 – through 3.6.5 | |
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
References
- https://access.redhat.com/security/cve/CVE-2025-4969 vdb-entry, x_refsource_REDHAT
- RHBZ#2367552 issue-tracking, x_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/447