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Bug 1530360 - (CVE-2017-18030) CVE-2017-18030 Qemu: Out-of-bounds access in cirrus_invalidate_region routine
CVE-2017-18030 Qemu: Out-of-bounds access in cirrus_invalidate_region routine
Status: CLOSED NOTABUG
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=20170125,reported=2...
: Security
Depends On: 1534673
Blocks: 1530362
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Reported: 2018-01-02 13:32 EST by Pedro Sampaio
Modified: 2018-01-16 05:13 EST (History)
41 users (show)

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Last Closed: 2018-01-16 05:13:16 EST
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Description Pedro Sampaio 2018-01-02 13:32:14 EST 
Quick emulator(Qemu) built with the Cirrus CLGD 54xx VGA Emulator support is
vulnerable to an out-of-bounds access issue. It could occur while refreshing vnc surface area, in case the initial pitch was negative in cirrus_invalidate_region.

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

Upstream patch:
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  -> https://git.qemu.org/?p=qemu.git;a=commitdiff;h=f153b563f8cf121aebf5a2fff5f0110faf58ccb3

Reference:
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  -> http://www.openwall.com/lists/oss-security/2018/01/15/3
Comment 2 Prasad J Pandit 2018-01-15 12:36:46 EST 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1534673]
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