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Date: Wed, 24 Jul 2013 01:06:38 +0530 (IST)
From: P J P <>
To: oss security list <>
Subject: CVE request: Linux kernel: panic while appending data to a corked
 IPv6 socket in ip6_append_data_mtu


Linux kernel built with the IPv6 networking support is vulnerable to a crash
while appending data to an IPv6 socket with UDP_CORKED option set. UDP_CORK
enables accumulating data and sending it as single datagram.

An unprivileged user/program could use this flaw to crash the kernel, 
resulting in local DoS.

Upstream fix:



Red Hat would like to thank Hannes Frederic Sowa for reporting this issue.

Thank you.
Prasad J Pandit / Red Hat Security Response Team
DB7A 84C5 D3F9 7CD1 B5EB  C939 D048 7860 3655 602B

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