oss-security - CVE request Qemu: acpi: heap based buffer overrun during VM migration

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Message-ID: <alpine.LFD.2.20.1512241145360.17815@wniryva>
Date: Thu, 24 Dec 2015 11:48:02 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
Subject: CVE request Qemu: acpi: heap based buffer overrun during VM
 migration

   Hello,

Qemu emulator built with the Q35 chipset based pc system emulator is 
vulnerable to a heap based buffer overflow. It occurs during VM guest 
migration, as more(16 bytes) data is moved into allocated(8 bytes) memory 
area.

A privileged guest user could use this issue to corrupt the VM guest image, 
potentially leading to a DoS. This issue affects q35 machine types.

Upstream fix:
-------------
   -> http://git.qemu.org/?p=qemu.git;a=commitdiff;h=d9a3b33d2c9f996537b7f1d0246dee2d0120cefb

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1283722

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

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