{"cve":"CVE-2016-9604","nvd":{"published":"2018-07-11T13:29:00.207","modified":"2026-06-17T00:56:19.690","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","score":4.4},"cwes":["CWE-347","CWE-732"],"references":["http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html","http://www.securityfocus.com/bid/102135","https://access.redhat.com/errata/RHSA-2017:1842","https://access.redhat.com/errata/RHSA-2017:2077","https://access.redhat.com/errata/RHSA-2017:2669"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T20:52:03.425131697+00:00"},"epss":{"cve":"CVE-2016-9604","score":0.00271,"percentile":0.19361,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}