What is CVE-2016-9083?

CVE-2016-9083 is a high-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2016-11-28.

How severe is CVE-2016-9083?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2016-9083 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Linux Kernel

CVE-2016-9083

drivers/vfio/pci/vfio_pci.c in the Linux kernel through 4.8.11 allows local users to bypass integer overflow checks, and cause a denial of service (memory corruption) or have unspecified other impact, by leveraging access to a vfio PCI device file for a VFIO_DEVICE_SET_IRQS ioctl call, aka a "state machine confusion bug."

Vulnerability class: Buffer Overflow

Published 2016-11-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Linux Kernel

Weakness classification (CWE)

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www.openwall.com/lists/oss-security/2016/10/26/11 (mailing-list, Mailing List, Third Party Advisory)
patchwork.kernel.org/patch/9373631/ (Patch, Vendor Advisory)
rhn.redhat.com/errata/RHSA-2017-0387.html (vendor-advisory, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Issue Tracking, Vendor Advisory)
github.com/torvalds/linux/commit/05692d7005a364add85c6e25a6c4447ce08f913a (Patch, Third Party Advisory, Issue Tracking)
rhn.redhat.com/errata/RHSA-2017-0386.html (vendor-advisory, Third Party Advisory)
www.securityfocus.com/bid/93929 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-9083?: CVE-2016-9083 is a high-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2016-11-28.
How severe is CVE-2016-9083?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2016-9083 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.