Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Mon, 10 Oct 2016 23:25:55 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Sabrina Dubroca <sdubroca@...hat.com>
Subject: CVE-2016-7039 Kernel: net: unbounded recursion in the vlan GRO
 processing

    Hello,

Linux kernel built with the 802.1Q/802.1ad VLAN(CONFIG_VLAN_8021Q) OR Virtual 
eXtensible Local Area Network(CONFIG_VXLAN) with Transparent Ethernet 
Bridging(TEB) GRO support, is vulnerable to a stack overflow issue. It could 
occur while receiving large packets via GRO path; As an unlimited recursion 
could unfold in both VLAN and TEB modules, leading to a stack corruption in 
the kernel.

A remote user could use this flaw to cause kernel panic by sending malicious 
packets to a server that has GRO enabled.

Please see a proposed patch to fix this issue attached herein.

'CVE-2016-7039' has been assigned to this issue by Red Hat Inc.

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1375944

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F
View attachment "upstream-0001-net-add-recursion-limit-to-GRO.patch" of type "text/plain" (8015 bytes)

Powered by blists - more mailing lists

Your e-mail address:

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.