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List:       oss-security
Subject:    [oss-security] CVE-2017-18043 Qemu: integer overflow in ROUND_UP macro could result in DoS
From:       P J P <ppandit () redhat ! com>
Date:       2018-01-19 10:38:51
Message-ID: nycvar.YSQ.7.76.1801191547190.7816 () wniryva
[Download RAW message or body]

   Hello,

Quick Emulator(Qemu) built with a macro ROUND_UP(n, d), used to promote number 
'n' to the nearest multiple of 'd', is vulnerable to an integer overflow 
issue. It could occur if 'd' is unsigned and smaller in type from 'n'.

A user could use this flaw to crash the Qemu process resulting in DoS.

Upstream patch:
---------------
   -> https://git.qemu.org/?p=qemu.git;a=commit;h=2098b073f398cd628c09c5a78537a6854

CVE-2017-18043 assigned via - https://cveform.mitre.org.

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