DEBIAN-CVE-2016-9604

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2016-9604
Downstream
DLA-922-1
Published: 11 Jul 2018, 13:29
Last modified:28 Apr 2026, 20:16

Vulnerability Summary

Overall Risk (default)
low
18/100
CVSS Score
4.4 MEDIUM
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

11 Jul 2018, 13:29
Published
Vulnerability first disclosed
28 Apr 2026, 20:16
Last Modified
Vulnerability information updated

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 Metrics

  • v3.0•MEDIUM•Score: 4.4CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Affected Systems

  • debian•linux

    < 4.9.25-1 | < 4.9.25-1 | < 4.9.25-1 | < 4.9.25-1

References (1)