CVE-2016-2383

Name: CVE-2016-2383
Creator: NVD / NIST
Published: 2016-04-27T17:59:10.943+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2016-2383 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.37%

29.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 4.5.0	—
Linux	Linux Kernel	4.5.0	Rc1
Canonical	Ubuntu Linux	14.04	—
Canonical	Ubuntu Linux	15.10	—
Opensuse	Leap	42.1	—

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492Patch, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/02/14/1Mailing List, Third Party Advisory
http://www.ubuntu.com/usn/USN-2947-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2947-2Third Party Advisory
http://www.ubuntu.com/usn/USN-2947-3Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1308452Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492Patch, Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492Patch, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/02/14/1Mailing List, Third Party Advisory
http://www.ubuntu.com/usn/USN-2947-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2947-2Third Party Advisory
http://www.ubuntu.com/usn/USN-2947-3Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1308452Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492Patch, Third Party Advisory

Timeline

Published: Apr 27, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-2383?

How severe is CVE-2016-2383?

CVE-2016-2383 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2016-2383?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-2383?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST