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:
Depends On: 1341932
Blocks: 1326310
TreeView+ depends on / blocked
 
Reported: 2016-06-02 05:21 UTC by Prasad Pandit
Modified: 2021-02-17 03:47 UTC (History)
34 users (show)

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


Attachments (Terms of Use)

Description Prasad 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 Pandit 2016-06-02 05:22:26 UTC
Acknowledgments:

Name: Li Qiang (360.cn Inc.)

Comment 2 Prasad 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.


Note You need to log in before you can comment on or make changes to this bug.