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kernel: heap out-of-bounds in AF_PACKET sockets. This new issue is analogous to previously disclosed CVE-2016-8655. In both cases, a socket option that changes socket state may race with safety checks in packet_set_ring. Previously with PACKET_VERSION. This time with PACKET_RESERVE. The solution is similar: lock the socket for the update. This issue may be exploitable, we did not investigate further. As this issue affects PF_PACKET sockets, it requires CAP_NET_RAW in the process namespace. But note that with user namespaces enabled, any process can create a namespace in which it has CAP_NET_RAW.","Type":"Description","Title":null},{"CveYear":"2017","CveId":"1000111","Ordinal":"2","NoteData":"2017-10-03","Type":"Other","Title":"Published"},{"CveYear":"2017","CveId":"1000111","Ordinal":"3","NoteData":"2017-12-06","Type":"Other","Title":"Modified"}]}}}