CVE-2016-7421

MEDIUM

QEMU < 2.7.1 - Denial of Service via Infinite Loop in pvscsi_ring_pop_req_descr

Title source: llm
STIX 2.1

Description

The pvscsi_ring_pop_req_descr function in hw/scsi/vmw_pvscsi.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 process IO loop to the ring size.

References (7)

Core 7
Core References
Patch, Third Party Advisory mailing-list x_refsource_mlist
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201609-01
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/92998
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/09/16/9
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/09/16/3

Scores

CVSS v3 4.4
EPSS 0.0040
EPSS Percentile 32.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-834
Status published
Products (2)
debian/debian_linux 8.0
qemu/qemu < 2.7.1
Published Dec 10, 2016
Tracked Since Feb 18, 2026