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Bug 1536377 - (CVE-2017-18043) CVE-2017-18043 Qemu: integer overflow in ROUND_UP macro could result in DoS
CVE-2017-18043 Qemu: integer overflow in ROUND_UP macro could result in DoS
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20170914,reported=2...
: Security
Depends On: 1536379 1536381 1536380
Blocks: 1491569
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Reported: 2018-01-19 04:50 EST by Prasad J Pandit
Modified: 2018-07-18 11:44 EDT (History)
38 users (show)

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Description Prasad J Pandit 2018-01-19 04:50:34 EST 
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 differs in type from 'n'.

A user/process 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

Reference:
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  -> http://www.openwall.com/lists/oss-security/2018/01/19/1
Comment 1 Prasad J Pandit 2018-01-19 04:51:04 EST 
Acknowledgments:

Name: Eric Blake (Red Hat Inc.)
Comment 2 Prasad J Pandit 2018-01-19 04:56:19 EST 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1536380]


Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1536379]
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