What is CVE-2016-8650?

CVE-2016-8650 is a medium-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2016-11-28.

How severe is CVE-2016-8650?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2016-8650 known to be exploited?

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

Improper input validation in Linux Kernel

CVE-2016-8650

The mpi_powm function in lib/mpi/mpi-pow.c in the Linux kernel through 4.8.11 does not ensure that memory is allocated for limb data, which allows local users to cause a denial of service (stack memory corruption and panic) via an add_key system call for an RSA key with a zero exponent.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

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

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (32.5th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.5% 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

RUB-SysSec/kAFL

References

github.com/torvalds/linux/commit/f5527fffff3f002b0a6b376163613b82f69de073 (Patch, Third Party Advisory, Issue Tracking)
www.securitytracker.com/id/1037968 (vdb-entry)
seclists.org/fulldisclosure/2016/Nov/76 (mailing-list, Mailing List)
www.openwall.com/lists/oss-security/2016/11/24/8 (mailing-list, Mailing List, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
access.redhat.com/errata/RHSA-2018:1854 (vendor-advisory)
access.redhat.com/errata/RHSA-2017:0932 (vendor-advisory)
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Issue Tracking, Vendor Advisory)
access.redhat.com/errata/RHSA-2017:0933 (vendor-advisory)
access.redhat.com/errata/RHSA-2017:0931 (vendor-advisory)

Frequently asked questions

What is CVE-2016-8650?: CVE-2016-8650 is a medium-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2016-11-28.
How severe is CVE-2016-8650?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2016-8650 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.