oss-security - CVE request: Linux kernel: panic while appending data to a corked IPv6 socket in ip6_append_data

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.LFD.2.03.1307240104350.5565@erqung.pbz>
Date: Wed, 24 Jul 2013 01:06:38 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
Subject: CVE request: Linux kernel: panic while appending data to a corked
 IPv6 socket in ip6_append_data_mtu

   Hi,

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:
-------------
  -> https://git.kernel.org/linus/75a493e60ac4bbe2e977e7129d6d8cbb0dd236be

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=987633

Acknowledgements:
-----------------

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

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.