What is CVE-2016-9793?

CVE-2016-9793 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2016-9793 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2016-9793?

CVE-2016-9793 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-2016-9793?

No patch is currently available for CVE-2016-9793. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2016-9793 actively exploited?

CVE-2016-9793 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2016-9793

High

The sock_setsockopt function in net/core/sock.c in the Linux kernel before 4.8.14 mishandles negative values of sk_sndbuf and sk_rcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability for a crafted setsockopt system call with the (1) SO_SNDBUFFORCE or (2) SO_RCVBUFFORCE option.

Package Linux Kernel

Published 2016-12-28

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-119

CVE-2016-9793 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2016-9793 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-4.8.14

Release Notes Vendor Advisory
Securityfocus
http://www.securityfocus.com/bid/94655

Third Party Advisory VDB Entry
Securitytracker
http://www.securitytracker.com/id/1037968

Third Party Advisory VDB Entry
Red Hat
https://access.redhat.com/errata/RHSA-2017:0931

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2017:0932

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2017:0933

Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1402013

Issue Tracking Third Party Advisory
GitHub
https://github.com/xairy/kernel-exploits/tree/master/CVE-2016-9793

Third Party Advisory
Source
https://source.android.com/security/bulletin/2017-03-01.html

Third Party Advisory
Kernel patch commit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b98b0bc8c431e3ceb4b26b0dfc8db509518fb290
Patch
Kernel patch commit
http://www.openwall.com/lists/oss-security/2016/12/03/1
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/b98b0bc8c431e3ceb4b26b0dfc8db509518fb290
Patch

Details

CVE ID CVE-2016-9793

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2016-12-28

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2016-9793?

CVE-2016-9793 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2016-9793 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2016-9793?

CVE-2016-9793 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-2016-9793?

No patch is currently available for CVE-2016-9793. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2016-9793 actively exploited?

No — CVE-2016-9793 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →