Bug 1400829 (CVE-2016-9776) - CVE-2016-9776 Qemu: net: mcf_fec: infinite loop while receiving data in mcf_fec_receive
Summary: CVE-2016-9776 Qemu: net: mcf_fec: infinite loop while receiving data in mcf_f...
Alias: CVE-2016-9776
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
: 1399531 (view as bug list)
Depends On: 1400830
Blocks: 1326713
TreeView+ depends on / blocked
Reported: 2016-12-02 07:58 UTC by Prasad Pandit
Modified: 2021-02-17 02:57 UTC (History)
38 users (show)

Fixed In Version:
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Clone Of:
Last Closed: 2017-02-07 07:41:28 UTC

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Description Prasad Pandit 2016-12-02 07:58:31 UTC
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

  -> http://www.openwall.com/lists/oss-security/2016/12/02/3

Comment 1 Prasad Pandit 2016-12-02 07:59:06 UTC

Name: Wjjzhang (tencent.com)

Comment 2 Prasad Pandit 2016-12-02 08:00:14 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1400830]

Comment 3 Cole Robinson 2017-01-16 18:38:10 UTC
commit 77d54985b85a0cb760330ec2bd92505e0a2a97a9
Author: Prasad J Pandit <pjp>
Date:   Tue Nov 29 00:38:39 2016 +0530

    net: mcf: check receive buffer size register value

Comment 4 Prasad Pandit 2017-02-07 07:38:57 UTC
*** Bug 1399531 has been marked as a duplicate of this bug. ***

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