CVE-2017-1000111 Race condition in n/a
A race condition in Linux kernel AF_PACKET sockets allows local attackers with CAP_NET_RAW to trigger heap out-of-bounds writes, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-1000111?
CVE-2017-1000111 is a high-severity vulnerability in Debian Debian Linux, published on 4 Oct 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Linux kernel: heap out-of-bounds in AF_PACKET sockets. This new issue is analogous to previously disclosed CVE-2016-8655. In both cases, a socket option that changes socket state may race with safety checks in packet_set_ring. Previously with PACKET_VERSION. This time with PACKET_RESERVE. The solution is similar: lock the socket for the update. This issue may be exploitable, we did not investigate further. As this issue affects PF_PACKET sockets, it requires CAP_NET_RAW in the process namespace. But note that with user namespaces enabled, any process can create a namespace in which it has CAP_NET_RAW.
Weakness: CWE-787
Which versions are affected by CVE-2017-1000111?
It affects 9 products.
Products include Debian Debian Linux, Linux kernel, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 3 more.
How do I fix CVE-2017-1000111?
Apply the vendor's patch.
Is CVE-2017-1000111 being exploited?
There is no known exploitation of CVE-2017-1000111 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2017-1000111, GHSA-7m59-9m96-wch5, UBUNTU-CVE-2017-1000111.