Improper Access Control Affecting kernel-debug-core package, versions <0:4.18.0-372.9.1.el8
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Test your applications- Snyk ID SNYK-ROCKY8-KERNELDEBUGCORE-3193237
- published 5 Jan 2023
- disclosed 24 Aug 2022
Introduced: 24 Aug 2022
CVE-2021-4037 Open this link in a new tabHow to fix?
Upgrade Rocky-Linux:8 kernel-debug-core to version 0:4.18.0-372.9.1.el8 or higher.
This issue was patched in RLSA-2022:1988.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug-core package and not the kernel-debug-core package as distributed by Rocky-Linux.
See How to fix? for Rocky-Linux:8 relevant fixed versions and status.
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.
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4037
- https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-4037.json
- https://access.redhat.com/security/cve/CVE-2021-4037
- https://bugzilla.redhat.com/show_bug.cgi?id=2004810
- https://bugzilla.redhat.com/show_bug.cgi?id=2027239
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=01ea173e103e
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0fa3ecd87848
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
- https://www.debian.org/security/2022/dsa-5257