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LIN10-4274 : Security Advisory - linux - CVE-2018-13405

Created: Jul 15, 2018    Updated: Dec 3, 2018
Resolved Date: Jul 29, 2018
Found In Version: 10.17.41.1
Fix Version: 10.17.41.10
Severity: Standard
Applicable for: Wind River Linux LTS 17
Component/s: Kernel

Description

The inode_init_owner function in fs/inode.c in the Linux kernel through 4.17.4 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.

https://nvd.nist.gov/vuln/detail/CVE-2018-13405

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