Out-of-bounds read in QEMU - CVE-2016-7155
Published: December 10, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU39985
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2016-7155
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: QEMU
Affected software:
QEMU
QEMU
Detailed vulnerability description
The vulnerability allows a local privileged user to perform a denial of service (DoS) attack.
hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (out-of-bounds access or infinite loop, and QEMU process crash) via a crafted page count for descriptor rings.
How to mitigate CVE-2016-7155
Install update from vendor's website.
Sources
- http://git.qemu.org/?p=qemu.git;a=commit;h=7f61f4690dd153be98900a2a508b88989e692753
- http://www.openwall.com/lists/oss-security/2016/09/06/2
- http://www.openwall.com/lists/oss-security/2016/09/07/1
- http://www.securityfocus.com/bid/92772
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg00050.html