CVE-2024-37021
Vulnérabilité non évaluée dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: fpga: manager: add owner module and take its refcount The current implementation of the fpga manager assumes that the low-level module registers a driver for the parent device and uses its owner pointer to take the module's refcount. This approach is problematic since it can lead to a null pointer dereference while attempting to get the manager if the parent device does not have a driver. To address this problem, add a module owner pointer to the fpga_manager struct and use it to take the module's refcount. Modify the functions for registering the manager to take an additional owner module parameter and rename them to avoid conflicts. Use the old function names for helper macros that automatically set the module that registers the manager as the owner. This ensures compatibility with existing low-level control modules and reduces the chances of registering a manager without setting the owner. Also, update the documentation to keep it consistent with the new interface for registering an fpga manager. Other changes: opportunistically move put_device() from __fpga_mgr_get() to fpga_mgr_get() and of_fpga_mgr_get() to improve code clarity since the manager device is taken in these functions.
Gravité et risque d'exploitation
CVE-2024-37021 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.21 %, ce qui la place devant 11.0 % des CVE référencées.
Que faire ?
- Vérifiez si Linux (versions <4d4d2d4346857bf778fafaa97d6f76bb1663e3c9, <=6.1.*, <=*, 6.6.33, 4.4, 6.9.4, 6.10, <62ac496a01c9337a11362cea427038ba621ca9eb, <2da62a139a6221a345db4eb9f4f1c4b0937c89ad, <=6.6.*, <304f8032d601d4f9322ca841cd0b573bd1beb158, 0, 6.1.120, <=6.9.*, 654ba4cc0f3ed7c0f08bfb39f66059d8c42943ee, <4.4) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.