NULL pointer dereference in Linux kernel - CVE-2018-14646

Vulnerability identifier: #VU16179

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-14646

CWE-ID: CWE-476

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to cause DoS condition on the target system.

The vulnerability exists due to NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker can trigger NULL pointer dereference when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service.

Linux kernel
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - Extended Update Support

kernel (Red Hat package)
kernel-rt (Red Hat package)

Update to version 4.15-rc8.

Linux kernel - update to 4.15 rc8
kernel (Red Hat package) - update to 3.10.0-862.25.3.el7
kernel-rt (Red Hat package) - update to 3.10.0-957.1.3.rt56.913.el7

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f428fe4a04cc339166c8bb...

• Red Hat update for kernel
• Red Hat update for kernel