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Date: Mon,  4 Jan 2016 11:58:01 -0500 (EST)
From: cve-assign@...re.org
To: ppandit@...hat.com
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com
Subject: Re: CVE request Qemu: net: vmxnet3: incorrect l2 header validation leads to a crash

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> Qemu emulator built with a VMWARE VMXNET3 paravirtual NIC emulator support is
> vulnerable to crash issue. It occurs when a guest sends a Layer-2 packets
> smaller than 22 bytes.
> 
> A privileged(CAP_SYS_RAWIO) guest user could use this flaw to crash the Qemu
> process instance resulting in DoS.
> 
> http://git.qemu.org/?p=qemu.git;a=commit;h=a7278b36fcab9af469563bd7b9dadebe2ae25e48
> https://bugzilla.redhat.com/show_bug.cgi?id=1270871

>> 'tx_pkt->packet_type' hasn't been assigned for such packets, and
>> 'vmxnet3_on_tx_done_update_stats()' expects it to be properly set.

Use CVE-2015-8744.

- -- 
CVE assignment team, MITRE CVE Numbering Authority
M/S M300
202 Burlington Road, Bedford, MA 01730 USA
[ PGP key available through http://cve.mitre.org/cve/request_id.html ]
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