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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 flaw in libsoup’s `permessage-deflate` WebSocket extension allows a remote attacker to cause a Denial of Service via memory exhaustion. The internal `inflate()` loop resizes its buffer dynamically without enforcing an upper limit *during* decompression. Because size checks are either performed only on the compressed wire-payload or executed too late (after inflation completes), a small decompression bomb can trigger an immediate Out-of-Memory (OOM) crash on both client and server applications.
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle. Changing version to 45.
Proposed upstream fix: https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/543
FEDORA-2026-3f60ccf61f (libsoup3-3.6.6-10.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-3f60ccf61f
FEDORA-2026-ce24b84bb1 (libsoup3-3.7.2-2.fc45) has been submitted as an update to Fedora 45. https://bodhi.fedoraproject.org/updates/FEDORA-2026-ce24b84bb1
FEDORA-2026-fce2f41203 (libsoup3-3.6.6-5.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-fce2f41203
FEDORA-2026-3f60ccf61f 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-2026-3f60ccf61f` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3f60ccf61f See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-ce24b84bb1 has been pushed to the Fedora 45 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-ce24b84bb1` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-ce24b84bb1 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-fce2f41203 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-fce2f41203` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-fce2f41203 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-3f60ccf61f (libsoup3-3.6.6-10.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-fce2f41203 (libsoup3-3.6.6-5.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-ce24b84bb1 (libsoup3-3.7.2-2.fc45) has been pushed to the Fedora 45 stable repository. If problem still persists, please make note of it in this bug report.