CVE-2024-50093

CVE-2024-50093

Título es
CVE-2024-50093

Mar, 05/11/2024 – 17:15

Gravedad 2.0 Txt
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Título en

CVE-2024-50093

Descripción en
In the Linux kernel, the following vulnerability has been resolved:

thermal: intel: int340x: processor: Fix warning during module unload

The processor_thermal driver uses pcim_device_enable() to enable a PCI
device, which means the device will be automatically disabled on driver
detach. Thus there is no need to call pci_disable_device() again on it.

With recent PCI device resource management improvements, e.g. commit
f748a07a0b64 ("PCI: Remove legacy pcim_release()"), this problem is
exposed and triggers the warining below.

[ 224.010735] proc_thermal_pci 0000:00:04.0: disabling already-disabled device
[ 224.010747] WARNING: CPU: 8 PID: 4442 at drivers/pci/pci.c:2250 pci_disable_device+0xe5/0x100

[ 224.010844] Call Trace:
[ 224.010845]
[ 224.010847] ? show_regs+0x6d/0x80
[ 224.010851] ? __warn+0x8c/0x140
[ 224.010854] ? pci_disable_device+0xe5/0x100
[ 224.010856] ? report_bug+0x1c9/0x1e0
[ 224.010859] ? handle_bug+0x46/0x80
[ 224.010862] ? exc_invalid_op+0x1d/0x80
[ 224.010863] ? asm_exc_invalid_op+0x1f/0x30
[ 224.010867] ? pci_disable_device+0xe5/0x100
[ 224.010869] ? pci_disable_device+0xe5/0x100
[ 224.010871] ? kfree+0x21a/0x2b0
[ 224.010873] pcim_disable_device+0x20/0x30
[ 224.010875] devm_action_release+0x16/0x20
[ 224.010878] release_nodes+0x47/0xc0
[ 224.010880] devres_release_all+0x9f/0xe0
[ 224.010883] device_unbind_cleanup+0x12/0x80
[ 224.010885] device_release_driver_internal+0x1ca/0x210
[ 224.010887] driver_detach+0x4e/0xa0
[ 224.010889] bus_remove_driver+0x6f/0xf0
[ 224.010890] driver_unregister+0x35/0x60
[ 224.010892] pci_unregister_driver+0x44/0x90
[ 224.010894] proc_thermal_pci_driver_exit+0x14/0x5f0 [processor_thermal_device_pci]

[ 224.010921] —[ end trace 0000000000000000 ]—

Remove the excess pci_disable_device() calls.

[ rjw: Subject and changelog edits ]

05/11/2024
05/11/2024
Gravedad 3.1 Txt Gravedad 3.1 (CVSS 3.1 Base Score)
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Jose Alexis Correa Valencia

Consultor de sistemas informáticos avanzados con más de 25 años de experiencia en el sector privado. Su carrera se ha enfocado en el análisis y diseño de sistemas, la instalación y configuración de hardware y software, así como en la administración de redes para diversas empresas. Además, ha tenido el privilegio de ser capacitador en temáticas avanzadas, especializándose en el manejo de datos en línea, la seguridad de transacciones y los multimedios.

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