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Fencer Vulns
high 7.8

CVE-2016-4805 json

Use-after-free vulnerability in drivers/net/ppp/ppp_generic.c in the Linux kernel before 4.5.2 allows local users to cause a denial of serv…

published 2016-05-23 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5788

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 43%
public exploits
0
none known

Summary

Use-after-free vulnerability in drivers/net/ppp/ppp_generic.c in the Linux kernel before 4.5.2 allows local users to cause a denial of service (memory corruption and system crash, or spinlock) or possibly have unspecified other impact by removing a network namespace, related to the ppp_register_net_channel and ppp_unregister_channel functions.

Patch / fix

  • linux linux_kernel 3.2.80, 3.10.102, 3.12.59, 3.14.67, 3.16.35, 3.18.37, 4.1.28, 4.4.8, 4.5.2
  • linux Debian 14, Debian 13, Debian 12 4.5.2-1

debian advisories DEBIAN-CVE-2016-4805

  • linux Ubuntu 14.04 LTS 3.13.0-86.130
  • linux Ubuntu 16.04 LTS 4.4.0-22.39
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1010.12
  • linux-lts-wily Ubuntu 14.04 LTS 4.2.0-36.41~14.04.1
  • linux-lts-vivid Ubuntu 14.04 LTS 3.19.0-59.65~14.04.1
  • linux-lts-xenial Ubuntu 14.04 LTS 4.4.0-22.39~14.04.1
  • linux-snapdragon Ubuntu 16.04 LTS 4.4.0-1013.14

ubuntu advisories UBUNTU-CVE-2016-4805

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-ec2 SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 3.0.101-0.47.86.1
  • kernel-pae SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 3.0.101-0.47.86.1
  • kernel-xen SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 3.0.101-0.47.86.1
  • kernel-syms SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 3.0.101-0.47.86.1
  • kernel-trace SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 3.0.101-0.47.86.1
  • kernel-bigsmp SLES 11 SP3-LTSS, OpenStack Cloud 5, Manager Proxy 2.1 +1 more 3.0.101-0.47.86.1
  • kernel-source SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 3.0.101-0.47.86.1
  • kernel-default SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 3.0.101-0.47.86.1

suse advisories SUSE-SU-2017:0333-1SUSE-SU-2016:2245-1SUSE-SU-2016:2105-1SUSE-SU-2016:1985-1SUSE-SU-2016:1937-1SUSE-SU-2016:1690-1

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-2016-4805 updated cvss 1.9

kernel: Use after free vulnerability in ppp_unregister_channel

  • 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
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 4 kernel Red Hat Enterprise Linux 5 kernel
    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

0.50% chance of exploitation in the next 30 days, higher than 43% 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

Weakness
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.