Resource exhaustion in Linux kernel - CVE-2016-7039

 

Resource exhaustion in Linux kernel - CVE-2016-7039

Published: November 15, 2016 / Updated: May 30, 2020


Vulnerability identifier: #VU1174
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-7039
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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

The weakness exists in the IP stack due to stack consumption. A remote attacker can trigger use of the GRO path for large crafted packets, as demonstrated by packets that contain only VLAN headers, and cause the service to crash.

Affected software

Linux kernel
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Server for ARM
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-aarch64 (Red Hat package)

How to mitigate CVE-2016-7039

Update to version 4.8.3.

Linux kernel - update to 4.1.37
kernel (Red Hat package) - update to 3.10.0-327.36.2.el7
kernel-rt (Red Hat package) - update to 3.10.0-327.36.3.rt56.238.el7
kernel-aarch64 (Red Hat package) - update to 4.5.0-15.2.1.el7

External References

Related Security Bulletins