Improper Verification of Cryptographic Signature Affecting torvalds/linux package, versions [,4.11.1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.03% (6th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3006075
  • published26 Jan 2022
  • disclosed11 Jul 2018
  • creditUnknown

Introduced: 11 Jul 2018

CVE-2016-9604  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 4.11.1 or higher.

Overview

Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature. 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

CVSS Base Scores

version 3.1