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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. A heap buffer overflow was found in libsoup's WebSocket incoming receive buffer handling. Incoming frames are accumulated in a GByteArray. With max-incoming-payload-size set to 0 (unlimited), a peer could declare a multi-GiB payload and stream it until the buffer length wrapped in g_byte_array_set_size() while the read still targeted the original offset, writing past the allocation. Fixed by rejecting payload lengths above what the receive buffer can represent as soon as the frame header is parsed, before buffering the payload (commit 381a474f, libsoup 3.7.3). Such frames are closed as SOUP_WEBSOCKET_CLOSE_TOO_BIG. References: https://gitlab.gnome.org/GNOME/libsoup/-/work_items/554 (Bug 6) https://gitlab.gnome.org/GNOME/libsoup/-/commit/381a474f
rawhide and f45 will be fixed by upgrading to 3.8 w/ mclazy f44 and f43 will need a backport of the commit
FEDORA-2026-6c3a4775a6 (libsoup3-3.6.6-6.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-6c3a4775a6
FEDORA-2026-f06a7887af (libsoup3-3.6.6-11.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-f06a7887af
FEDORA-2026-6c3a4775a6 has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-6c3a4775a6` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-6c3a4775a6 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-f06a7887af has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-f06a7887af` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-f06a7887af See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-f06a7887af (libsoup3-3.6.6-11.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-6c3a4775a6 (libsoup3-3.6.6-6.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.