CVE-2016-8576

LOW

Description

The xhci_ring_fetch function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process.

References

http://git.qemu.org/?p=qemu.git;a=commit;h=05f43d44e4bc26611ce25fd7d726e483f73363ce

http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html

http://www.openwall.com/lists/oss-security/2016/10/10/12

http://www.openwall.com/lists/oss-security/2016/10/10/6

http://www.securityfocus.com/bid/93469

https://access.redhat.com/errata/RHSA-2017:2392

https://access.redhat.com/errata/RHSA-2017:2408

https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html

https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg01265.html

https://security.gentoo.org/glsa/201611-11

Details

Source: MITRE

Published: 2016-11-04

Updated: 2020-10-15

Type: CWE-770

Risk Information

CVSS v2.0

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3.0

Base Score: 6

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Impact Score: 4

Exploitability Score: 1.5

Severity: MEDIUM