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Fencer Intel
high 7.5

CVE-2016-9919 json

The icmp6_send function in net/ipv6/icmp.c in the Linux kernel through 4.8.12 omits a certain check of the dst data structure, which allows…

published 2016-12-08 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-10706

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.7%
EPSS 5.7% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

The icmp6_send function in net/ipv6/icmp.c in the Linux kernel through 4.8.12 omits a certain check of the dst data structure, which allows remote attackers to cause a denial of service (panic) via a fragmented IPv6 packet.

Patch / fix

  • linux linux_kernel 4.9
  • linux Debian 14, Debian 13, Debian 12 4.8.15-1

debian advisories DEBIAN-CVE-2016-9919

  • linux Ubuntu 16.04 LTS 4.4.0-185.215
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1110.121
  • linux-kvm Ubuntu 16.04 LTS 4.4.0-1076.83
  • linux-aws Ubuntu Pro 14.04 LTS 4.4.0-1074.78
  • linux-fips Ubuntu Pro FIPS-updates 16.04 LTS 4.4.0-1042.47
  • linux-lts-xenial Ubuntu Pro 14.04 LTS 4.4.0-185.215~14.04.1

ubuntu advisories UBUNTU-CVE-2016-9919

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-syms SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 4.4.38-93.1
  • kernel-source SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 4.4.38-93.1
  • kernel-default SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +3 more 4.4.38-93.1
  • kernel-obs-build SLE Software Development Kit 12 SP2 4.4.38-93.1
  • kgraft-patch-SLE12-SP2_Update_4 SLE Live Patching 12 1-2.1

suse advisories SUSE-SU-2017:0181-1

  • linux Arch Linux 4.8.12-3
  • linux-zen Arch Linux 4.8.13-1

arch linux advisories AVG-101AVG-102

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-9919 updated cvss 7.5

kernel: Linux panic on fragemented IPv6 traffic (icmp6_send)

  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.67% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.