Improper Access Control Affecting torvalds/linux package, versions [,4.14.6)


Severity

Recommended
0.0
low
0
10

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

Threat Intelligence

EPSS
0.05% (17th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3006140
  • published26 Jan 2022
  • disclosed20 Dec 2017
  • creditUnknown

Introduced: 20 Dec 2017

CVE-2017-17807  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 4.14.6 or higher.

Overview

Affected versions of this package are vulnerable to Improper Access Control. The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.

References

CVSS Base Scores

version 3.1