Bug 1341931 (CVE-2016-5238) - CVE-2016-5238 Qemu: scsi: esp: OOB write when using non-DMA mode in get_cmd
Summary: CVE-2016-5238 Qemu: scsi: esp: OOB write when using non-DMA mode in get_cmd
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2016-5238
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20160531,repor...
Depends On: 1341932
Blocks: 1326310
TreeView+ depends on / blocked
 
Reported: 2016-06-02 05:21 UTC by Prasad J Pandit
Modified: 2019-06-08 21:14 UTC (History)
34 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2019-06-08 02:53:14 UTC


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Description Prasad J Pandit 2016-06-02 05:21:58 UTC
Quick Emulator(Qemu) built with the ESP/NCR53C9x controller emulation support
is vulnerable to an OOB write access issue. The controller uses 16-byte FIFO
buffer for command and information transfer. The OOB write occurs while
reading from information transfer buffer via non-DMA mode in routine get_cmd().

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

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg00150.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2016/06/02/9

Comment 1 Prasad J Pandit 2016-06-02 05:22:26 UTC
Acknowledgments:

Name: Li Qiang (360.cn Inc.)

Comment 2 Prasad J Pandit 2016-06-02 05:24:11 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1341932]

Comment 3 Fedora Update System 2016-06-17 15:57:05 UTC
xen-4.5.3-8.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2016-06-18 18:43:44 UTC
xen-4.6.1-11.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2016-06-25 19:25:51 UTC
qemu-2.6.0-4.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2016-07-02 19:25:06 UTC
qemu-2.3.1-16.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2016-07-02 19:30:23 UTC
qemu-2.4.1-11.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.


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