What is CVE-2016-4997?

CVE-2016-4997 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Permissions, Privileges and Access Control flaw (CWE-264). CVE-2016-4997 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2016-4997?

CVE-2016-4997 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2016-4997?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2016-4997 patch availability.

Is CVE-2016-4997 actively exploited?

CVE-2016-4997 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/264.html

CVE-2016-4997

High

The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

Package Linux Kernel

Published 2016-07-03

Last modified 2026-05-06

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-264

CVE-2016-4997 is a Permissions, Privileges and Access Control vulnerability

What is Permissions, Privileges and Access Control?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. Learn more on MITRE CWE

References

43 total

Openwall
http://www.openwall.com/lists/oss-security/2016/09/29/10

Exploit Mailing List Third Party Advisory
GitHub
https://github.com/nccgroup/TriforceLinuxSyscallFuzzer/tree/master/crash_reports/report_compatIpt

Exploit Third Party Advisory
Kernel Git
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce683e5f9d045e5d67d1312a42b359cb2ab2a13c

Vendor Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3

Vendor Advisory
GitHub
https://github.com/torvalds/linux/commit/ce683e5f9d045e5d67d1312a42b359cb2ab2a13c

Patch Third Party Advisory

Showing 5 of 43 references View all on NVD

Details

CVE ID CVE-2016-4997

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2016-07-03

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2016-4997?

CVE-2016-4997 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2016-4997 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2016-4997?

CVE-2016-4997 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2016-4997?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2016-4997 patch availability.
Is CVE-2016-4997 actively exploited?

No. CVE-2016-4997 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.