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Date: Thu, 3 Mar 2016 16:34:42 +0530 (IST)
From: P J P <>
To: oss security list <>
cc: Liu Ling <>
Subject: CVE request Qemu: net: out of bounds read in


Qemu emulator built with the IP checksum routines is vulnerable to an OOB read 
access issue. It could occur while computing checksum for TCP/UDP packets, as 
the function uses payload length from the packet without checking against the 
data buffer size.

A user inside guest could use this flaw to read excessive bytes or crash the 
Qemu process resulting in DoS.

Upstream patch:


This issue was discovered by Ling Liu of Qihoo 360 Inc.

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

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