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Bug 1520782 - (CVE-2017-17381) CVE-2017-17381 Qemu: virtio: divide by zero exception while updating rings
CVE-2017-17381 Qemu: virtio: divide by zero exception while updating rings
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=20171124,reported=2...
: Security
Depends On: 1520784 1520785
Blocks: 1516119
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Reported: 2017-12-05 02:18 EST by Prasad J Pandit
Modified: 2018-07-18 11:40 EDT (History)
24 users (show)

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Description Prasad J Pandit 2017-12-05 02:18:28 EST 
Virtio Vring implementation in Quick Emulator(QEMU) is vulnerable
to an arithmetic exception issue. It could occur if a guest was
to unset vring alignment while updating Virtio rings.

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

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2017-12/msg00166.html
Comment 2 Prasad J Pandit 2017-12-05 02:20:30 EST 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1520785]


Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1520784]
Comment 3 Prasad J Pandit 2017-12-06 06:28:42 EST 
Acknowledgments:

Name: Huawei IT Network Security Alpha Lab, Dengzhan Heyuandong Bijunhua and Liweichao (Huawei Inc.)
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