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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.

🗓️ 31 Aug 2022 07:00:00Reported by MicrosoftType 
mscve
 mscve🔗 msrc.microsoft.com👁 2 Views

A Linux kernel vulnerability in inode_init_owner allows unintended group ownership and SGID/execute permissions for XFS when a SGID writable directory belongs to another group.

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Vulners
Node
microsoftcm1_kernel_5.10.155.1-1Range<5.10.155.1-1

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31 Aug 2022 07:00Current
6.8Medium risk
Vulners AI Score6.8
CVSS 24.6
CVSS 3.17.8
EPSS0.01018
inode init ownerlinux kernelxfs file systemsgid permissionsgroup ownershipwritable directory
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