CVE-2016-9755

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Summary

CVECVE-2016-9755
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-12-28 07:59:00 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe netfilter subsystem in the Linux kernel before 4.9 mishandles IPv6 reassembly, which allows local users to cause a denial of service (integer overflow, out-of-bounds write, and GPF) or possibly have unspecified other impact via a crafted application that makes socket, connect, and writev system calls, related to net/ipv6/netfilter/nf_conntrack_reasm.c and net/ipv6/netfilter/nf_defrag_ipv6_hooks.c.

Risk And Classification

Primary CVSS: v3.0 7.8 HIGH from [email protected]

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

EPSS: 0.000510000 probability, percentile 0.157310000 (date 2026-05-11)

Problem Types: CWE-787 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.8HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:L/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
[PATCH 10/11] netfilter: ipv6: nf_defrag: drop mangled skb on ream error — Netdev af854a3a-2127-422b-91ae-364da2661108 www.spinics.net Mailing List, Patch
Linux Kernel CVE-2016-9755 Out of Bounds Write Security Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
oss-security - CVE Request: Linux: net: out-of-bounds due do a signedness issue when defragging ipv6 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
netfilter: ipv6: nf_defrag: drop mangled skb on ream error · torvalds/linux@9b57da0 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch, Vendor Advisory
Bug 1400904 – CVE-2016-9755 kernel: netfilter: Out-of-bounds write due to a signedness issue when defragmenting IPv6 packets af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking
Google Groups af854a3a-2127-422b-91ae-364da2661108 groups.google.com
Google Groups MITRE groups.google.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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