HOMEVULNERABILITIESCVE-2016-6351
MEDIUM

CVE-2016-6351

NVD-CWE-noinfoPublished: September 7, 2016· Updated: Jun 17, 2026

6.7
CVSS v3.1

Official Description

The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.

NVD Source

Technical Analysis

CVE-2016-6351 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.7.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
qemu1 product(s)
qemu
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.openwall.com/lists/oss-security/2016/07/25/14
ADVISORYhttp://www.openwall.com/lists/oss-security/2016/07/26/7
ADVISORYhttp://www.securityfocus.com/bid/92119
ADVISORYhttp://www.ubuntu.com/usn/USN-3047-1
ADVISORYhttp://www.ubuntu.com/usn/USN-3047-2
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
ADVISORYhttp://www.openwall.com/lists/oss-security/2016/07/25/14
ADVISORYhttp://www.openwall.com/lists/oss-security/2016/07/26/7
ADVISORYhttp://www.securityfocus.com/bid/92119
ADVISORYhttp://www.ubuntu.com/usn/USN-3047-1
ADVISORYhttp://www.ubuntu.com/usn/USN-3047-2
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/11/msg00038.html

All References (16)

→
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=926cde5f3e4d2504ed161ed0cb771ac7cad6fd11
→
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=cc96677469388bad3d66479379735cf75db069e3
→
http://www.openwall.com/lists/oss-security/2016/07/25/14Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2016/07/26/7Mailing List · Third Party Advisory
→
http://www.securityfocus.com/bid/92119Third Party Advisory · VDB Entry
→
http://www.ubuntu.com/usn/USN-3047-1Third Party Advisory
→
http://www.ubuntu.com/usn/USN-3047-2Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing List · Third Party Advisory
→
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=926cde5f3e4d2504ed161ed0cb771ac7cad6fd11
→
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=cc96677469388bad3d66479379735cf75db069e3
→
http://www.openwall.com/lists/oss-security/2016/07/25/14Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2016/07/26/7Mailing List · Third Party Advisory
→
http://www.securityfocus.com/bid/92119Third Party Advisory · VDB Entry
→
http://www.ubuntu.com/usn/USN-3047-1Third Party Advisory
→
http://www.ubuntu.com/usn/USN-3047-2Third Party Advisory

Quick Facts

CVE IDCVE-2016-6351
CVSS Score6.7 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected3 vendor(s)
PublishedSep 7, 2016

Related CVEs (NVD-CWE-noinfo)

CVE-2017-3623
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CVE-2014-2623
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CVE-2023-45894
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CVE-2024-22216
10.0
CVE-2008-4873
10.0
CVE-2011-0807
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-6351 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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