vulnerability

Ubuntu: (Multiple Advisories) (CVE-2021-4037): Linux kernel vulnerabilities

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
2022-05-17
Added
2022-10-01
Modified
2025-01-28

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.

Solution(s)

ubuntu-upgrade-linux-image-4-4-0-1113-awsubuntu-upgrade-linux-image-4-4-0-1114-kvmubuntu-upgrade-linux-image-4-4-0-1151-awsubuntu-upgrade-linux-image-4-4-0-234-genericubuntu-upgrade-linux-image-4-4-0-234-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-lts-xenial
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