CVE-2016-7466

CVSS V2 Low 1.9 CVSS V3 Medium 6
Description
Memory leak in the usb_xhci_exit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device.
Overview
  • CVE ID
  • CVE-2016-7466
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2016-12-10T00:59:19
  • Last Modified Date
  • 2023-02-12T23:25:26
Weakness Enumerations
CWE URL
CWE-772 http://cwe.mitre.org/data/definitions/772.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* 1 OR 2.7.1
AND
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:openstack:11:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:M/Au:N/C:N/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 1.9
  • Severity
  • LOW
  • Exploitability Score
  • 3.4
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 6
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.5
  • Impact Score
  • 4
References
Reference URL Reference Tags
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=b53dd4495ced2432a0b652ea895e651d07336f7e
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/19/8 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/20/3 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/93029 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:2392 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2408 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2016-7466
https://bugzilla.redhat.com/show_bug.cgi?id=1377837
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg02773.html Patch Third Party Advisory
https://security.gentoo.org/glsa/201611-11 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2016-7466
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7466
History
Created Old Value New Value Data Type Notes
2022-05-10 06:58:22 Added to TrackCVE
2022-12-02 12:18:36 2016-12-10T00:59Z 2016-12-10T00:59:19 CVE Published Date updated
2022-12-02 12:18:36 2021-08-04T17:15:35 CVE Modified Date updated
2022-12-02 12:18:36 Analyzed Vulnerability Status updated
2023-02-02 17:05:45 2023-02-02T16:17:40 CVE Modified Date updated
2023-02-02 17:05:45 Analyzed Modified Vulnerability Status updated
2023-02-02 17:05:46 Memory leak in the usb_xhci_exit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device. A memory-leak flaw was found in the Quick Emulator(QEMU) built with USB xHCI controller emulation support. The flaw could occur while doing a USB-device unplug operation. Unplugging the device repeatedly resulted in leaking host memory, which affected other services on the host. A privileged user inside the guest could exploit this flaw to cause a denial of service on the host or potentially crash the host's QEMU process instance. Description updated
2023-02-02 17:05:48 References updated
2023-02-13 01:06:55 2023-02-12T23:25:26 CVE Modified Date updated
2023-02-13 01:06:55 A memory-leak flaw was found in the Quick Emulator(QEMU) built with USB xHCI controller emulation support. The flaw could occur while doing a USB-device unplug operation. Unplugging the device repeatedly resulted in leaking host memory, which affected other services on the host. A privileged user inside the guest could exploit this flaw to cause a denial of service on the host or potentially crash the host's QEMU process instance. Memory leak in the usb_xhci_exit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device. Description updated