Date: Wed, 24 Jul 2013 01:45:26 +0530 (IST) From: P J P <ppandit@...hat.com> To: oss security list <oss-security@...ts.openwall.com> Subject: Re: CVE request: Linux kernel: panic while appending data to a corked IPv6 socket in ip6_append_data_mtu +-- On Tue, 23 Jul 2013, Seth Arnold wrote --+ | UDP_CORKED? I don't see this string in my /usr/include/ or recent Linux git | tree. | Am I missing something? It's one of those non-portable Linux socket options. === $ man 7 udp ... UDP_CORK (since Linux 2.5.44) If this option is enabled, then all data output on this socket is accumulated into a single datagram that is transmitted when the option is disabled. This option should not be used in code intended to be portable. === Though the crash is more of due to IPV6_MTU value set. (from commit log) -- Prasad J Pandit / Red Hat Security Response Team DB7A 84C5 D3F9 7CD1 B5EB C939 D048 7860 3655 602B
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