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Ubuntu: USN-5650-1 (CVE-2021-4037): Linux kernel vulnerabilities

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Ubuntu: USN-5650-1 (CVE-2021-4037): Linux kernel vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/17/2022
Created
10/03/2022
Added
10/01/2022
Modified
10/05/2022

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-aws
  • ubuntu-upgrade-linux-image-4-4-0-1114-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1151-aws
  • ubuntu-upgrade-linux-image-4-4-0-234-generic
  • ubuntu-upgrade-linux-image-4-4-0-234-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-lts-xenial
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-lts-xenial
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-lts-xenial

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