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.
Published 2018-07-11 13:29:00
Updated 2019-10-09 23:20:39
Source Red Hat, Inc.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2016-9604

0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 24 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2016-9604

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
2.1
LOW AV:L/AC:L/Au:N/C:N/I:P/A:N
3.9
2.9
NIST
1.2
LOW AV:L/AC:H/Au:N/C:N/I:P/A:N
1.9
2.9
Red Hat, Inc.
4.4
MEDIUM CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
0.8
3.6
NIST
4.4
MEDIUM CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
0.8
3.6
Red Hat, Inc.

CWE ids for CVE-2016-9604

References for CVE-2016-9604

Products affected by CVE-2016-9604

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