What is CVE-2017-11176?

CVE-2017-11176 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-2017-11176 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2017-11176?

CVE-2017-11176 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-2017-11176?

No patch is currently available for CVE-2017-11176. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2017-11176 actively exploited?

CVE-2017-11176 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-2017-11176

High

The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.

Package Linux Kernel

Published 2017-07-11

Last modified 2026-05-13

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-2017-11176 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-2017-11176 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
http://www.debian.org/security/2017/dsa-3927

Third Party Advisory
Debian Security
http://www.debian.org/security/2017/dsa-3945

Third Party Advisory
Securityfocus
http://www.securityfocus.com/bid/99919

Third Party Advisory VDB Entry
Red Hat
https://access.redhat.com/errata/RHSA-2017:2918

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2017:2930

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2017:2931

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2018:0169

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2018:3822

Third Party Advisory
Help
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0

Third Party Advisory
Exploit-DB
https://www.exploit-db.com/exploits/45553/

Third Party Advisory VDB Entry
Kernel patch commit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f991af3daabaecff34684fd51fac80319d1baad1
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/f991af3daabaecff34684fd51fac80319d1baad1
Patch

Details

CVE ID CVE-2017-11176

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2017-07-11

Modified 2026-05-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2017-11176?

CVE-2017-11176 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-2017-11176 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2017-11176?

CVE-2017-11176 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-2017-11176?

No patch is currently available for CVE-2017-11176. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2017-11176 actively exploited?

No — CVE-2017-11176 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 →