oss-security - CVE request Qemu: net: e1000 infinite loop in start_xmit and e1000_receive

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Date: Tue, 19 Jan 2016 22:56:06 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Laszlo Ersek <lersek@...hat.com>
Subject: CVE request Qemu: net: e1000 infinite loop in start_xmit and
 e1000_receive_iov routines

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

   Hello,

Qemu emulator built with the e1000 NIC emulation support is vulnerable to an 
infinite loop issue. It could occur while processing data via transmit or 
receive descriptors, provided the initial receive/transmit descriptor 
head(TDH/RDH) is set outside the allocated descriptor buffer.

A privileged user inside guest could use this flaw to crash the Qemu instance 
resulting in DoS.

Upstream patch
- --------------
   -> https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg03454.html

Reference:
- ----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1298570

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

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