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Vulnerabilities CVE-2021-4037

CVE-2021-4037

Medium
Open
TLP:CLEAR

Kernel: security regression for cve-2018-13405

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Description

A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create files for the XFS file-system with an unintended group ownership and with group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a certain group and is writable by a user who is not a member of this group. This can lead to excessive permissions granted in case when they should not. This vulnerability is similar to the previous CVE-2018-13405 and adds the missed fix for the XFS.

Details

CVSS Score
4.4
EPSS Score
0.30%

22.7th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Confidence
90%
Published
Aug 24, 2022
Last Modified
Aug 10, 2026
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