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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 permessage-deflate outgoing path. soup_websocket_extension_deflate_process_outgoing_message() stored deflateBound()'s uLong result in a guint and grew a GByteArray by that amount. For payloads approaching 4 GiB, the bound exceeds G_MAXUINT; truncation allowed buffer->len + max_length to wrap on later growth, and zlib wrote through next_out past the allocation. Fixed by refusing payloads whose compressed bound cannot fit in a GByteArray and by checking each incremental growth (commit dbd0417e, libsoup 3.7.3). References: https://gitlab.gnome.org/GNOME/libsoup/-/work_items/554 (Bug 8) https://gitlab.gnome.org/GNOME/libsoup/-/commit/dbd0417e
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.