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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2017-10-04T01:00:00

Updated: 2024-08-05T21:53:06.811Z

Reserved: 2017-10-03T00:00:00

Link: CVE-2017-1000111

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-10-05T01:29:04.430

Modified: 2024-11-21T03:04:11.327

Link: CVE-2017-1000111

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-08-10T00:00:00Z

Links: CVE-2017-1000111 - Bugzilla