Note:
This project will be discontinued after December 13, 2021. [more]
2017-10-05
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.
Products | Debian_linux, Linux_kernel, Enterprise_linux, Enterprise_linux_desktop, Enterprise_linux_server, Enterprise_linux_server_aus, Enterprise_linux_server_eus, Enterprise_linux_server_tus, Enterprise_linux_workstation |
Type | Out-of-bounds Write (CWE-787) |
First patch | - None (likely due to unavailable code) |
Links |
• http://www.securityfocus.com/bid/100267
• http://www.securitytracker.com/id/1039132 • https://access.redhat.com/errata/RHSA-2017:2930 • https://access.redhat.com/security/cve/cve-2017-1000111 • https://access.redhat.com/errata/RHSA-2017:2918 |