What is CVE-2016-2383?

CVE-2016-2383 is a medium-severity vulnerability in Linux Kernel. CVSS score: 5.5/10. Published 2016-04-27.

How severe is CVE-2016-2383?

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

Is CVE-2016-2383 known to be exploited?

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

Vulnerability in Linux Kernel

CVE-2016-2383

The adjust_branches function in kernel/bpf/verifier.c in the Linux kernel before 4.5 does not consider the delta in the backward-jump case, which allows local users to obtain sensitive information from kernel memory by creating a packet filter and then loading crafted BPF instructions.

Published 2016-04-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (28.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.8% 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 — versions 4.5.0
Canonical Ubuntu Linux — versions 14.04, 15.10
openSUSE Leap — versions 42.1

Public proof-of-concept exploits

dylandreimerink/gobpfld

References

github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492 (Patch, Third Party Advisory)
www.ubuntu.com/usn/USN-2947-3 (vendor-advisory, Third Party Advisory)
www.ubuntu.com/usn/USN-2947-2 (vendor-advisory, Third Party Advisory)
www.ubuntu.com/usn/USN-2947-1 (vendor-advisory, Third Party Advisory)
www.openwall.com/lists/oss-security/2016/02/14/1 (mailing-list, Mailing List, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2016-2383?: CVE-2016-2383 is a medium-severity vulnerability in Linux Kernel. CVSS score: 5.5/10. Published 2016-04-27.
How severe is CVE-2016-2383?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2016-2383 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.