CVE Vulnerabilities

CVE-2018-14646

NULL Pointer Dereference

Published: Nov 26, 2018 | Modified: Oct 09, 2019
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4.9 MEDIUM
AV:L/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
5.5 MODERATE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Linux_kernel Linux * 4.14 (including)
Linux_kernel Linux 4.15-rc1 (including) 4.15-rc1 (including)
Linux_kernel Linux 4.15-rc2 (including) 4.15-rc2 (including)
Linux_kernel Linux 4.15-rc3 (including) 4.15-rc3 (including)
Linux_kernel Linux 4.15-rc4 (including) 4.15-rc4 (including)
Linux_kernel Linux 4.15-rc5 (including) 4.15-rc5 (including)
Linux_kernel Linux 4.15-rc6 (including) 4.15-rc6 (including)
Linux_kernel Linux 4.15-rc7 (including) 4.15-rc7 (including)
Red Hat Enterprise Linux 7 RedHat kernel-rt-0:3.10.0-957.1.3.rt56.913.el7 *
Red Hat Enterprise Linux 7 RedHat kernel-0:3.10.0-957.1.3.el7 *
Red Hat Enterprise Linux 7.5 Extended Update Support RedHat kernel-0:3.10.0-862.25.3.el7 *
Linux Ubuntu precise/esm *
Linux-aws Ubuntu upstream *
Linux-azure Ubuntu upstream *
Linux-azure-edge Ubuntu upstream *
Linux-euclid Ubuntu esm-apps/xenial *
Linux-euclid Ubuntu upstream *
Linux-euclid Ubuntu xenial *
Linux-flo Ubuntu esm-apps/xenial *
Linux-flo Ubuntu trusty *
Linux-flo Ubuntu upstream *
Linux-flo Ubuntu xenial *
Linux-gcp Ubuntu upstream *
Linux-gke Ubuntu upstream *
Linux-gke Ubuntu xenial *
Linux-goldfish Ubuntu esm-apps/xenial *
Linux-goldfish Ubuntu trusty *
Linux-goldfish Ubuntu upstream *
Linux-goldfish Ubuntu xenial *
Linux-grouper Ubuntu trusty *
Linux-grouper Ubuntu upstream *
Linux-hwe Ubuntu upstream *
Linux-hwe-edge Ubuntu upstream *
Linux-kvm Ubuntu upstream *
Linux-lts-trusty Ubuntu precise/esm *
Linux-lts-trusty Ubuntu upstream *
Linux-lts-utopic Ubuntu trusty *
Linux-lts-utopic Ubuntu upstream *
Linux-lts-vivid Ubuntu trusty *
Linux-lts-vivid Ubuntu upstream *
Linux-lts-wily Ubuntu trusty *
Linux-lts-wily Ubuntu upstream *
Linux-lts-xenial Ubuntu upstream *
Linux-maguro Ubuntu trusty *
Linux-maguro Ubuntu upstream *
Linux-mako Ubuntu esm-apps/xenial *
Linux-mako Ubuntu trusty *
Linux-mako Ubuntu upstream *
Linux-mako Ubuntu xenial *
Linux-manta Ubuntu trusty *
Linux-manta Ubuntu upstream *
Linux-oem Ubuntu upstream *
Linux-oem Ubuntu xenial *
Linux-raspi2 Ubuntu upstream *
Linux-snapdragon Ubuntu upstream *

Potential Mitigations

References