UBUNTU-CVE-2017-1000111

Dashboard / Vulnerabilities / UBUNTU-CVE-2017-1000111

UBUNTU-CVE-2017-1000111

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2017-1000111, https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=c27927e372f0785f3303e8fad94b85945e2c97b7, https://ubuntu.com/security/notices/USN-3384-1, https://ubuntu.com/security/notices/USN-3384-2, https://ubuntu.com/security/notices/USN-3385-1, https://ubuntu.com/security/notices/USN-3385-2, https://ubuntu.com/security/notices/USN-3386-1, https://ubuntu.com/security/notices/USN-3386-2, https://www.cve.org/CVERecord?id=CVE-2017-1000111