CVE-2015-3636

The ping_unhash function in net/ipv4/ping.c in the Linux kernel before 4.0.3 does not initialize a certain list data structure during an unhash operation, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) by leveraging the ability to make a SOCK_DGRAM socket system call for the IPPROTO_ICMP or IPPROTO_ICMPV6 protocol, and then making a connect system call after a disconnect.

Affected products

Alt Linux, Centos, Linux Kernel, Red Hat, Suse, Ubuntu

Linux Linux Kernel

≤ 4.0.2

Fix

Available

CVSS 2.0

4.9 MEDIUM

EPSS

2.5% (83th percentile)

NVD status

Modified

Published

2015-08-06