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

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

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

Updated: 2017-12-06T10:57:01

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


Link: CVE-2017-1000111

JSON object: View

cve-icon NVD Information

Status : Analyzed

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

Modified: 2023-01-17T21:04:10.190


Link: CVE-2017-1000111

JSON object: View

cve-icon Redhat Information

No data.

CWE