CVE-2016-2198

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 the USB EHCI emulation support is vulnerable to a null pointer dereference flaw. It could occur when an application attempts to write to EHCI capabilities registers. A privileged user inside quest could use this flaw to crash the QEMU process instance resulting in DoS.

Affected products

Debian Linux: 8.0
QEMU: through 2.5.1.1; 2.6.0-rc0, 2.6.0-rc1, 2.6.0-rc2, 2.6.0-rc3, 2.6.0-rc4

References

http://www.openwall.com/lists/oss-security/2016/01/29/6
http://www.openwall.com/lists/oss-security/2016/01/30/2
https://bugzilla.redhat.com/show_bug.cgi?id=1301643
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05899.html
https://security.gentoo.org/glsa/201604-01
http://www.openwall.com/lists/oss-security/2016/01/29/6
http://www.openwall.com/lists/oss-security/2016/01/30/2
https://bugzilla.redhat.com/show_bug.cgi?id=1301643
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05899.html
https://security.gentoo.org/glsa/201604-01

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