CVE-2022-49183 Information

Description

In the Linux kernel the following vulnerability has been resolved:

net/sched: act_ct: fix ref leak when switching zones

When switching zones or network namespaces without doing a ct clear in between it is now leaking a reference to the old ct entry. That’s because tcf_ct_skb_nfct_cached() returns false and tcf_ct_flow_table_lookup() may simply overwrite it.

The fix is to as the ct entry is not reusable free it already at tcf_ct_skb_nfct_cached().

Reference

https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1 https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159 https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d