Linux kernel: heap out-of-bounds in AF_PACKET sockets. This new issue...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2017-1000111
Credits & Attribution
No credits recorded in the NVD database.
References
- https://access.redhat.com/errata/RHSA-2017:3200
- http://www.securityfocus.com/bid/100267
- https://access.redhat.com/errata/RHSA-2017:2918
- https://access.redhat.com/errata/RHSA-2017:2931
- http://www.debian.org/security/2017/dsa-3981
- https://access.redhat.com/security/cve/cve-2017-1000111
- http://www.securitytracker.com/id/1039132
- https://access.redhat.com/errata/RHSA-2017:2930
More from linux
View All →Affected Vendor
linux
View all reports →Affected Software
Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.