What is CVE-2016-9555?

CVE-2016-9555 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10, classified as a Out-of-bounds Read flaw (CWE-125). CVE-2016-9555 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2016-9555?

CVE-2016-9555 has a CVSS score of 9.8 out of 10, rated Critical severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2016-9555?

No patch is currently available for CVE-2016-9555. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2016-9555 actively exploited?

CVE-2016-9555 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2016-9555

Critical

The sctp_sf_ootb function in net/sctp/sm_statefuns.c in the Linux kernel before 4.8.8 lacks chunk-length checking for the first chunk, which allows remote attackers to cause a denial of service (out-of-bounds slab access) or possibly have unspecified other impact via crafted SCTP data.

Package Linux Kernel

Published 2016-11-28

Last modified 2026-05-06

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

9.8

out of 10

Critical

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2016-9555 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2016-9555 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/2016-12/msg00044.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00054.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00055.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00056.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00067.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00070.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00073.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00076.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00077.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00087.html

Mailing List Third Party Advisory
Red Hat
http://rhn.redhat.com/errata/RHSA-2017-0086.html

Third Party Advisory
Red Hat
http://rhn.redhat.com/errata/RHSA-2017-0091.html

Third Party Advisory
Red Hat
http://rhn.redhat.com/errata/RHSA-2017-0113.html

Third Party Advisory
Red Hat
http://rhn.redhat.com/errata/RHSA-2017-0307.html

Third Party Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.8

Release Notes Vendor Advisory
Openwall
http://www.openwall.com/lists/oss-security/2016/11/22/18

Mailing List Third Party Advisory
Securityfocus
http://www.securityfocus.com/bid/94479

Third Party Advisory VDB Entry
Securitytracker
http://www.securitytracker.com/id/1037339

Third Party Advisory VDB Entry
Bto
https://bto.bluecoat.com/security-advisory/sa134

Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1397930

Issue Tracking Third Party Advisory
Groups
https://groups.google.com/forum/#%21topic/syzkaller/pAUcHsUJbjk
Kernel patch commit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bf911e985d6bbaa328c20c3e05f4eb03de11fdd6
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/bf911e985d6bbaa328c20c3e05f4eb03de11fdd6
Patch

Details

CVE ID CVE-2016-9555

Severity Critical

CVSS score 9.8 / 10

CVSS version 3.1

Published 2016-11-28

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2016-9555?

CVE-2016-9555 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . CVE-2016-9555 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2016-9555?

CVE-2016-9555 has a CVSS score of 9.8 out of 10, rated Critical severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2016-9555?

No patch is currently available for CVE-2016-9555. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2016-9555 actively exploited?

No — CVE-2016-9555 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. View CWE-125 on MITRE CWE →