What is CVE-2016-8645?

CVE-2016-8645 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Improper Access Control flaw (CWE-284). CVE-2016-8645 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2016-8645?

CVE-2016-8645 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2016-8645?

No patch is currently available for CVE-2016-8645. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2016-8645 actively exploited?

CVE-2016-8645 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Improper Access Control (CWE-284)?

The product does not restrict or incorrectly restricts access to a resource from an unauthorised actor. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/284.html

CVE-2016-8645

Medium

The TCP stack in the Linux kernel before 4.8.10 mishandles skb truncation, which allows local users to cause a denial of service (system crash) via a crafted application that makes sendto system calls, related to net/ipv4/tcp_ipv4.c and net/ipv6/tcp_ipv6.c.

Package Linux Kernel

Published 2016-11-28

Last modified 2026-05-06

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-284

CVE-2016-8645 is a Improper Access Control vulnerability

What is Improper Access Control?

The product does not restrict or incorrectly restricts access to a resource from an unauthorised actor. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2016-8645 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.10

Release Notes
Openwall
http://www.openwall.com/lists/oss-security/2016/11/11/3

Mailing List Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2016/11/30/3
Securityfocus
http://www.securityfocus.com/bid/94264

Third Party Advisory VDB Entry
Securitytracker
http://www.securitytracker.com/id/1037285
Red Hat
https://access.redhat.com/errata/RHSA-2017:1842
Red Hat
https://access.redhat.com/errata/RHSA-2017:2077
Red Hat
https://access.redhat.com/errata/RHSA-2017:2669
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1393904

Issue Tracking
Kernel patch commit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac6e780070e30e4c35bd395acfe9191e6268bdd3
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/ac6e780070e30e4c35bd395acfe9191e6268bdd3
Patch

Details

CVE ID CVE-2016-8645

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.0

Published 2016-11-28

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2016-8645?

CVE-2016-8645 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Access Control flaw (CWE-284) . CVE-2016-8645 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2016-8645?

CVE-2016-8645 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2016-8645?

No patch is currently available for CVE-2016-8645. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2016-8645 actively exploited?

No — CVE-2016-8645 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Improper Access Control (CWE-284)?

The product does not restrict or incorrectly restricts access to a resource from an unauthorised actor. View CWE-284 on MITRE CWE →