Input validation error in QEMU - CVE-2016-4964
Published: December 10, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU39993
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-2016-4964
CWE-ID: CWE-20
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 a crash the entire system.
The mptsas_fetch_requests function in hw/scsi/mptsas.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop, and CPU consumption or QEMU process crash) via vectors involving s->state.
How to mitigate CVE-2016-4964
Install update from vendor's website.
Sources
- http://git.qemu.org/?p=qemu.git;a=commit;h=06630554ccbdd25780aa03c3548aaff1eb56dffd
- http://www.openwall.com/lists/oss-security/2016/05/24/4
- http://www.openwall.com/lists/oss-security/2016/05/24/7
- https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg04027.html
- https://security.gentoo.org/glsa/201609-01