CVE-2021-4037
kernel: security regression for CVE-2018-13405
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
Se ha encontrado una vulnerabilidad en la lógica de la función fs/inode.c:inode_init_owner() del kernel de LInux que permite a usuarios locales crear archivos para el sistema de archivos XFS con una propiedad de grupo no deseada y con los bits de permiso de ejecución de grupo y SGID establecidos, en un escenario en el que un directorio es SGID y pertenece a un determinado grupo y es escribible por un usuario que no es miembro de este grupo. Esto puede conllevar a una concesión de excesivos permisos cuando no deberían concederse. Esta vulnerabilidad es similar a la anterior CVE-2018-13405 y añade la corrección que faltaba para el XFS.
Red Hat Advanced Cluster Management for Kubernetes 2.5.0 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs and security issues. Issues addressed include privilege escalation and traversal vulnerabilities.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-12-01 CVE Reserved
- 2022-05-11 CVE Published
- 2024-08-03 CVE Updated
- 2025-03-29 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-284: Improper Access Control
CAPEC
References (6)
URL | Tag | Source |
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https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html | Mailing List |
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URL | Date | SRC |
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URL | Date | SRC |
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https://access.redhat.com/security/cve/CVE-2021-4037 | 2022-05-31 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2027239 | 2022-05-31 | |
https://www.debian.org/security/2022/dsa-5257 | 2022-12-08 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.11 Search vendor "Linux" for product "Linux Kernel" and version " < 5.11" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
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