In WebKitGTK before 2.32.4, there is a use-after-free in WebCore::ContainerNode::firstChild, a different vulnerability than CVE-2021-30889.
Created webkit2gtk3 tracking bugs for this issue:
Affects: fedora-all [bug 2040330]
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2022:1777 https://access.redhat.com/errata/RHSA-2022:1777
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):