Fiche vulnérabilité
CVE-2021-47058 : faille élevée linux linux kernel (CVSS 7.8)
Description
In the Linux kernel, the following vulnerability has been resolved: regmap: set debugfs_name to NULL after it is freed There is a upstream commit cffa4b2122f5("regmap:debugfs: Fix a memory leak when calling regmap_attach_dev") that adds a if condition when create name for debugfs_name. With below function invoking logical, debugfs_name is freed in regmap_debugfs_exit(), but it is not created again because of the if condition introduced by above commit. regmap_reinit_cache() regmap_debugfs_exit() ... regmap_debugfs_init() So, set debugfs_name to NULL after it is freed.
En bref
- Sévérité
- Élevée (CVSS 7.8)
- Vecteur CVSS
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 29 févr. 2024
- Dernière mise à jour
- 17 juin 2026
Produits concernés
- linux linux kernel
Références
- Fiche CVE-2021-47058 sur le NVD (NIST)
- git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea…
- git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd209…
- git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f…
- git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7…
- git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656…
- git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428…