CVE-2016-7466
Qemu: usb: xhci memory leakage during device unplug
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
Fuga de memoria en la función usb_xhci_exit en hw/usb/hcd-xhci.c en QEMU (también conocido como Quick Emulator), cuando el xhci utiliza msix, permite a administradores locales del SO invitado provocar una denegación de servicio (consumo de memoria y posible caída del proceso QEMU) desconectando repetidamente un dispositivo USB.
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.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2016-09-09 CVE Reserved
- 2016-11-10 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-06 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-772: Missing Release of Resource after Effective Lifetime
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=b53dd4495ced2432a0b652ea895e651d07336f7e | X_refsource_confirm | |
| http://www.openwall.com/lists/oss-security/2016/09/19/8 | Mailing List |
|
| http://www.openwall.com/lists/oss-security/2016/09/20/3 | Mailing List |
|
| http://www.securityfocus.com/bid/93029 | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg02773.html | 2023-02-12 |
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html | 2023-02-12 | |
| https://access.redhat.com/errata/RHSA-2017:2392 | 2023-02-12 | |
| https://access.redhat.com/errata/RHSA-2017:2408 | 2023-02-12 | |
| https://security.gentoo.org/glsa/201611-11 | 2023-02-12 | |
| https://access.redhat.com/security/cve/CVE-2016-7466 | 2017-08-01 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1377837 | 2017-08-01 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Redhat Search vendor "Redhat" | Virtualization Search vendor "Redhat" for product "Virtualization" | 4.0 Search vendor "Redhat" for product "Virtualization" and version "4.0" | - |
Affected
| in | Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0" | - |
Safe
|
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | <= 2.7.1 Search vendor "Qemu" for product "Qemu" and version " <= 2.7.1" | - |
Affected
| ||||||
| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 42.2 Search vendor "Opensuse" for product "Leap" and version "42.2" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Search vendor "Redhat" for product "Openstack" | 6.0 Search vendor "Redhat" for product "Openstack" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Search vendor "Redhat" for product "Openstack" | 7.0 Search vendor "Redhat" for product "Openstack" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Search vendor "Redhat" for product "Openstack" | 8 Search vendor "Redhat" for product "Openstack" and version "8" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Search vendor "Redhat" for product "Openstack" | 9 Search vendor "Redhat" for product "Openstack" and version "9" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Search vendor "Redhat" for product "Openstack" | 10 Search vendor "Redhat" for product "Openstack" and version "10" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Openstack Search vendor "Redhat" for product "Openstack" | 11 Search vendor "Redhat" for product "Openstack" and version "11" | - |
Affected
| ||||||