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CVE-2016-2197

20
FAUCET Score

CVE-2016-2197 describes a null pointer dereference vulnerability in QEMU's IDE AHCI emulation support. This flaw, occurring during the unmapping of FIS and CLB entries, allows a privileged guest user to crash the QEMU process, leading to a Denial of Service. Rated Medium with a CVSS score of 5.5, it requires local access and low privileges for exploitation. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.5.1.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 89th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (5)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2016-2197Low

Qemu: ide: ahci null pointer dereference when using FIS CLB engines

Jan 28, 2016

References

bugzilla.redhat.com / show_bug.cgi
Issue Tracking
lists.gnu.org / archive/html/qemu-devel/2016-01/msg05742.html
PatchVendor Advisory
security.gentoo.org / glsa/201604-01
Third Party Advisory
openwall.com / lists/oss-security/2016/01/29/2
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/01/30/1
Mailing ListThird Party Advisory
securityfocus.com / bid/82235
Third Party AdvisoryVDB Entry