Detections
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CVE-2016-9604
medium
Description
It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.
References
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604
https://bugzilla.novell.com/show_bug.cgi?id=1035576
https://access.redhat.com/errata/RHSA-2017:2669
https://access.redhat.com/errata/RHSA-2017:2077
https://access.redhat.com/errata/RHSA-2017:1842
http://www.securityfocus.com/bid/102135
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html