oss-security - CVE request Qemu: net: mcf_fec: infinite loop while receiving data in mcf_fec

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Message-ID: <alpine.LFD.2.20.1612021331570.5998@wniryva>
Date: Fri, 2 Dec 2016 13:40:12 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: wjjzhang <wjjzhang@...cent.com>
Subject: CVE request Qemu: net: mcf_fec: infinite loop while receiving data
 in mcf_fec_receive

   Hello,

Quick Emulator(Qemu) built with the ColdFire Fast Ethernet Controller emulator 
support is vulnerable to an infinite loop issue. It could occur while 
receiving packets in 'mcf_fec_receive'.

A privileged user/process inside guest could use this issue to crash the Qemu 
process on the host leading to DoS.

Upstream patch
--------------
   -> https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg05324.html

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1400829

This issue was reported by Wjjzhang of Tencent.com.

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F

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