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Bug 1376776 - (CVE-2016-7423) CVE-2016-7423 Qemu: scsi: mptsas: OOB access when freeing MPTSASRequest object
CVE-2016-7423 Qemu: scsi: mptsas: OOB access when freeing MPTSASRequest object
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20160915,repor...
: Security
Depends On: 1376777
Blocks: 1365400
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Reported: 2016-09-16 07:37 EDT by Prasad J Pandit
Modified: 2018-07-18 11:01 EDT (History)
36 users (show)

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A flaw was found in the Quick Emulator(QEMU) built with LSI SAS1068 Host Bus emulation support, where it is vulnerable to an invalid memory-access issue. The flaw could occur while processing SCSI IO requests in the mptsas_process_scsi_io_request routine. A privileged user inside the guest could use this flaw to crash the QEMU-process instance on the host (denial of service).
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Description Prasad J Pandit 2016-09-16 07:37:38 EDT 
Quick emulator(Qemu) built with the LSI SAS1068 Host Bus emulation support,
is vulnerable to an invalid memory access issue. It could occur while
processing scsi io requests in mptsas_process_scsi_io_request.

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

Upstream patch
--------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03604.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2016/09/16/5
Comment 1 Prasad J Pandit 2016-09-16 07:37:43 EDT 
Acknowledgments:

Name: Li Qiang (360.cn Inc.)
Comment 2 Prasad J Pandit 2016-09-16 07:38:44 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1376777]
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