Informazioni sul CVE-2024-37021
fpga: manager: add owner module and take its refcount
CWE ID: N/A
Base Score (CVSS): N/A
CVE: CVE-2024-37021
Descrizione: In the Linux kernel, the following vulnerability has been fixed: 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 because it can lead to a null pointer derefenerce 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.
Vettore di attacco
Punteggio CVSS
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Dettaglio del Vettore
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Riferimenti esterni
- https://git.kernel.org/stable/c/304f8032d601d4f9322ca841cd0b573bd1beb158
- https://git.kernel.org/stable/c/2da62a139a6221a345db4eb9f4f1c4b0937c89ad
- https://git.kernel.org/stable/c/62ac496a01c9337a11362cea427038ba621ca9eb
- https://git.kernel.org/stable/c/4d4d2d4346857bf778fafaa97d6f76bb1663e3c9
Prodotti interessati
- Linux – Linux
- Linux – Linux