CVE-2016-2197

low-risk
Published 2016-12-29

QEMU (aka Quick Emulator) built with an IDE AHCI emulation support is vulnerable to a null pointer dereference flaw. It occurs while unmapping the Frame Information Structure (FIS) and Command List Block (CLB) entries. A privileged user inside guest could use this flaw to crash the QEMU process instance resulting in DoS.

Do I need to act?

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0.11% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Qemu

References (12)

Mailing List http://www.openwall.com/lists/oss-security/2016/01/29/2
Mailing List http://www.openwall.com/lists/oss-security/2016/01/30/1
Third Party Advisory http://www.securityfocus.com/bid/82235
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1302057
Patch https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05742.html
Third Party Advisory https://security.gentoo.org/glsa/201604-01
Mailing List http://www.openwall.com/lists/oss-security/2016/01/29/2
Mailing List http://www.openwall.com/lists/oss-security/2016/01/30/1
Third Party Advisory http://www.securityfocus.com/bid/82235
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1302057
Patch https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05742.html
Third Party Advisory https://security.gentoo.org/glsa/201604-01
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal