** Changed in: linux (Ubuntu Groovy) Status: In Progress => Invalid
** Description changed: - When net_prio and net_cls cgroups are used, cgroup refcount is bogus, as - it's not incremented anymore, but decremented when sockets are closed. + [Impact] + When net_prio and net_cls cgroups are used, cgroup refcount is bogus, as it's not incremented anymore, but decremented when sockets are closed. This might lead to crashes possibly because of use-after-free when packets are received as shown in LP #1886668. - Cascardo. + [Test case] + Ran reproducer from comment #2. + + [Regression potential] + We could break the use of cgroup bpf. The use of cgroup bpf looks to still be working from the reproducer. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886860 Title: cgroup refcount is bogus when cgroup_sk_alloc is disabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886860/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs