CVE-2017-6347

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.10.1

Description The issue is related to the ip cmsg recv checksum function in the Linux kernel, which has incorrect expectations about skb data layout. This can be exploited by local users to cause a denial of service (buffer over-read) via crafted system calls. The exploitation can be demonstrated by using the MSG MORE flag in conjunction with loopback UDP transmission.

Recommendations For Linux kernel versions prior to 4.10.1, update to version 4.10.1 or later to resolve the issue. As a temporary workaround, consider restricting the use of the MSG MORE flag in conjunction with loopback UDP transmission to minimize the risk of exploitation.