Tracker / CVE-2017-18509
CVE-2017-18509
High 7.8
An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before 4.11. By setting a specific socket option, an attacker can control a pointer in kernel land and cause an inet_csk_listen_stop general protection fault, or potentially execute arbitrary code under certain circumstances. The issue can be triggered as root (e.g., inside a default LXC container or with the CAP_NET_ADMIN capability) or after namespace unsharing. This occurs because sk_type and protocol are not checked in the appropriate part of the ip6_mroute_* functions. NOTE: this affects Linux distributions that use 4.9.x longterm kernels before 4.9.187.
Affected products and versions
| canonical | ubuntu_linux |
|---|---|
| debian | debian_linux |
| linux | linux_kernel · … → 3.16.72 |
| linux | linux_kernel · 3.17 → 4.4.187 |
| linux | linux_kernel · 4.10 → 4.11 |
| linux | linux_kernel · 4.5 → 4.9.187 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.