CVE-2016-4805: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Canonical Ubuntu Linux: version 12.04 only
• Linux Linux Kernel: from 2.6.30, before 3.2.80 (fixed in 3.2.80); from 3.3, before 3.10.102 (fixed in 3.10.102); from 3.11, before 3.12.59 (fixed in 3.12.59); from 3.13, before 3.14.67 (fixed in 3.14.67); from 3.15, before 3.16.35 (fixed in 3.16.35); from 3.17, before 3.18.37 (fixed in 3.18.37); …
• Novell Opensuse Leap: version 42.1 only
• Novell Suse Linux Enterprise Desktop: version 12.0 only
• Novell Suse Linux Enterprise Live Patching: version 12.0 only
• Novell Suse Linux Enterprise Module For Public Cloud: version 12.0 only
• Novell Suse Linux Enterprise Real Time Extension: version 11.0 only; version 12.0 only
• Novell Suse Linux Enterprise Server: version 11.0 only; version 12.0 only
• Novell Suse Linux Enterprise Software Development Kit: version 11.0 only; version 12.0 only
• Novell Suse Linux Enterprise Workstation Extension: version 12.0 only
• Oracle Linux: version 6 only
• Red Hat Enterprise Linux: version 6.0 only; version 7.0 only

Published 2016-05-23. Last modified 2026-06-17.