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Fencer Vulns
high 7.8

CVE-2016-4951 json

The tipc_nl_publ_dump function in net/tipc/socket.c in the Linux kernel through 4.6 does not verify socket existence, which allows local us…

published 2016-05-23 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5925

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

The tipc_nl_publ_dump function in net/tipc/socket.c in the Linux kernel through 4.6 does not verify socket existence, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a dumpit operation.

Patch / fix

  • linux linux_kernel 4.1.28, 4.4.14, 4.6.3
  • linux Debian 14, Debian 13, Debian 12 4.5.5-1

debian advisories DEBIAN-CVE-2016-4951

  • linux Ubuntu 16.04 LTS 4.4.0-28.47
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1016.22
  • linux-lts-wily Ubuntu 14.04 LTS 4.2.0-41.48~14.04.1
  • linux-lts-vivid Ubuntu 14.04 LTS 3.19.0-64.72~14.04.1
  • linux-lts-xenial Ubuntu 14.04 LTS 4.4.0-28.47~14.04.1
  • linux-snapdragon Ubuntu 16.04 LTS 4.4.0-1019.22

ubuntu advisories UBUNTU-CVE-2016-4951

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-source openSUSE Tumbleweed 4.8.13-1.1

opensuse advisories openSUSE-SU-2024:10128-1

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-2016-4951 updated cvss 4.9

kernel: Null pointer dereference in tipc_nl_publ_dump

  • 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

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Technology feeds

References

Sources

Fencer Vulns 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.