CVE-2025-32907

NameCVE-2025-32907
DescriptionA flaw was found in libsoup. The implementation of HTTP range requests is vulnerable to a resource consumption attack. This flaw allows a malicious client to request the same range many times in a single HTTP request, causing the server to use large amounts of memory. This does not allow for a full denial of service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1103264, 1103518

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libsoup2.4 (PTS)bullseye2.72.0-2vulnerable
bullseye (security)2.72.0-2+deb11u2vulnerable
bookworm2.74.3-1+deb12u1vulnerable
sid, trixie2.74.3-10vulnerable
libsoup3 (PTS)bookworm3.2.2-2vulnerable
sid, trixie3.6.5-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libsoup2.4source(unstable)(unfixed)1103518
libsoup3source(unstable)(unfixed)1103264

Notes

https://gitlab.gnome.org/GNOME/libsoup/-/issues/428
See also https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/452
Upstream also claims there are multiple worse DoS problems, so questions the usefulness of this fix.

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