What is CVE-2016-4805?

CVE-2016-4805 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2016-4805 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2016-4805?

CVE-2016-4805 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-2016-4805?

No patch is currently available for CVE-2016-4805. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2016-4805 actively exploited?

CVE-2016-4805 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2016-4805

High

Use-after-free vulnerability in drivers/net/ppp/ppp_generic.c in the Linux kernel before 4.5.2 allows local users to cause a denial of service (memory corruption and system crash, or spinlock) or possibly have unspecified other impact by removing a network namespace, related to the ppp_register_net_channel and ppp_unregister_channel functions.

Package Linux Kernel

Published 2016-05-23

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-416

CVE-2016-4805 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2016-4805 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html

Mailing List Release Notes Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html

Mailing List Release Notes Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html

Mailing List Release Notes Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html

Mailing List Third Party Advisory
Debian Security
http://www.debian.org/security/2016/dsa-3607

Third Party Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.2

Mailing List Vendor Advisory
Oracle
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html

Third Party Advisory
Oracle
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html

Third Party Advisory
Securityfocus
http://www.securityfocus.com/bid/90605

Third Party Advisory VDB Entry
Securitytracker
http://www.securitytracker.com/id/1036763

Third Party Advisory VDB Entry
Ubuntu Security
http://www.ubuntu.com/usn/USN-3021-1

Third Party Advisory
Ubuntu Security
http://www.ubuntu.com/usn/USN-3021-2

Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1335803

Issue Tracking Third Party Advisory
Kernel patch commit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f461dcdd296eecedaffffc6bae2bfa90bd7eb89
Patch
Kernel patch commit
http://www.openwall.com/lists/oss-security/2016/05/15/2
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/1f461dcdd296eecedaffffc6bae2bfa90bd7eb89
Patch

Details

CVE ID CVE-2016-4805

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2016-05-23

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2016-4805?

CVE-2016-4805 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2016-4805 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2016-4805?

CVE-2016-4805 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-2016-4805?

No patch is currently available for CVE-2016-4805. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2016-4805 actively exploited?

No — CVE-2016-4805 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →