CVE-2016-2197

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-12-29 · updated 2026-06-17
Weakness: CWE-476

Description

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.

Affected products

QEMU: through 2.5.1.1

References

http://www.openwall.com/lists/oss-security/2016/01/29/2
http://www.openwall.com/lists/oss-security/2016/01/30/1
http://www.securityfocus.com/bid/82235
https://bugzilla.redhat.com/show_bug.cgi?id=1302057
https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05742.html
https://security.gentoo.org/glsa/201604-01
http://www.openwall.com/lists/oss-security/2016/01/29/2
http://www.openwall.com/lists/oss-security/2016/01/30/1
http://www.securityfocus.com/bid/82235
https://bugzilla.redhat.com/show_bug.cgi?id=1302057
https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05742.html
https://security.gentoo.org/glsa/201604-01

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