Improper Privilege Management Affecting kernel-docs package, versions <4.12.14-197.102.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
1.02% (59th percentile)

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  • Snyk IDSNYK-SLES151-KERNELDOCS-2652635
  • published14 Apr 2022
  • disclosed2 Dec 2021

Introduced: 2 Dec 2021

CVE-2018-13405  (opens in a new tab)
CWE-269  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 kernel-docs to version 4.12.14-197.102.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-docs package and not the kernel-docs package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID.

References

CVSS Base Scores

version 3.1