CVE-2021-4037 — Improper Access Control in Kernel

CWE-284 — Improper Access Control10 documents8 sources
Severity
7.8HIGHNVD
OSV6.7
EPSS
0.0%
top 89.47%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Linux KernelDebian LinuxDebian Linux+1 more
Timeline
PublishedAug 24
Latest updateFeb 15

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 pr…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages5 packages

▶NVDlinux/linux_kernel< 5.11
▶Debianlinux/linux_kernel< 5.10.149-1+3
▶Ubuntulinux/linux_kernel< 4.4.0-234.268
▶debiandebian/linux< linux 5.14.6-1 (bookworm)

Also affects: Debian Linux 10.0, 11.0

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

3
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities↗2022-09-30
▶
GHSA
GHSA-gvgr-4fph-m6hc: A vulnerability was found in the fs/inode↗2022-08-25
▶
OSV
CVE-2021-4037: A vulnerability was found in the fs/inode↗2022-08-24
▶

📋Vendor Advisories

6
CISA ICS
Siemens SCALANCE XCM-/XRM-300↗2024-02-15
▶
CISA ICS
Siemens SIMATIC S7-1500 TM MFP Linux Kernel↗2023-06-15
▶
Ubuntu
Linux kernel vulnerabilities↗2022-09-30
▶
Microsoft
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↗2022-08-09
▶
Red Hat
kernel: security regression for CVE-2018-13405↗2021-09-16
▶