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Red Hat: CVE-2016-9604: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)

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Red Hat: CVE-2016-9604: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:N)
Published
04/28/2017
Created
07/25/2018
Added
08/03/2017
Modified
03/03/2021

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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • 102135
  • DLA-922-1
  • CVE-2016-9604
  • RHSA-2017:1842
  • RHSA-2017:2077
  • RHSA-2017:2669
  • USN-3312-1
  • USN-3312-2
  • USN-3314-1
  • USN-3361-1
  • USN-3422-1
  • USN-3422-2
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