Bug#1110607: libsoup3: CVE-2025-8197

[Salvatore Bonaccorso]

Source: libsoup3
Version: 3.6.5-3
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for libsoup3.

CVE-2025-8197[0]:
| A global buffer overflow vulnerability was found in the
| soup_header_name_to_string function in Libsoup. The
| `soup_header_name_to_string` function does not validate the `name`
| parameter passed in, and directly accesses
| `soup_header_name_strings[name]`. The value of `name` is
| controllable, when `name` exceeds the index range of
| `soup_headr_name_string`, it will cause an out-of-bounds access.

There is only one reference to the Red Hat Bugzilla, and have not
found an upstream issue or a merge request referencing the CVE, can
you double-check?

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-8197
    https://www.cve.org/CVERecord?id=CVE-2025-8197
[1] https://bugzilla.redhat.com/show_bug.cgi?id=2383525

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore