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Bug 1483534 - (CVE-2017-12809) CVE-2017-12809 Qemu: ide: flushing of empty CDROM drives leads to NULL dereference
CVE-2017-12809 Qemu: ide: flushing of empty CDROM drives leads to NULL derefe...
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=20170711,reported=2...
: Security
Depends On: 1483536
Blocks: 1455462
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Reported: 2017-08-21 07:15 EDT by Prasad J Pandit
Modified: 2018-07-18 11:29 EDT (History)
38 users (show)

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Description Prasad J Pandit 2017-08-21 07:15:24 EDT 
Quick emulator built with the IDE disk and CD/DVD-ROM Emulator support is
vulnerable to a null pointer dereference issue. It could occur while
flushing an empty CDROM device drive.

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

Upstream patch:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg01850.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/08/21/2
Comment 1 Prasad J Pandit 2017-08-21 07:16:05 EDT 
Acknowledgments:

Name: Ryan Salsamendi (Palo Alto Networks PSIRT)
Comment 2 Prasad J Pandit 2017-08-21 07:17:37 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1483536]
Comment 3 Fedora Update System 2017-11-07 17:14:06 EST 
qemu-2.9.1-2.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.
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