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41 lines
3.1 KiB
JSON
41 lines
3.1 KiB
JSON
{
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"id": "CVE-2024-26715",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-04-03T15:15:53.750",
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"lastModified": "2024-04-03T17:24:18.150",
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"vulnStatus": "Awaiting Analysis",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: gadget: Fix NULL pointer dereference in dwc3_gadget_suspend\n\nIn current scenario if Plug-out and Plug-In performed continuously\nthere could be a chance while checking for dwc->gadget_driver in\ndwc3_gadget_suspend, a NULL pointer dereference may occur.\n\nCall Stack:\n\n\tCPU1: CPU2:\n\tgadget_unbind_driver dwc3_suspend_common\n\tdwc3_gadget_stop dwc3_gadget_suspend\n dwc3_disconnect_gadget\n\nCPU1 basically clears the variable and CPU2 checks the variable.\nConsider CPU1 is running and right before gadget_driver is cleared\nand in parallel CPU2 executes dwc3_gadget_suspend where it finds\ndwc->gadget_driver which is not NULL and resumes execution and then\nCPU1 completes execution. CPU2 executes dwc3_disconnect_gadget where\nit checks dwc->gadget_driver is already NULL because of which the\nNULL pointer deference occur."
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: usb: dwc3: gadget: corrige la desreferencia del puntero NULL en dwc3_gadget_suspend En el escenario actual, si el Plug-out y el Plug-In se ejecutan continuamente, podr\u00eda haber una posibilidad al verificar dwc->gadget_driver en dwc3_gadget_suspend, puede ocurrir una desreferencia del puntero NULL. Pila de llamadas: CPU1: CPU2: gadget_unbind_driver dwc3_suspend_common dwc3_gadget_stop dwc3_gadget_suspend dwc3_disconnect_gadget CPU1 b\u00e1sicamente borra la variable y CPU2 verifica la variable. Considere que CPU1 se est\u00e1 ejecutando y justo antes de que se borre gadget_driver y en paralelo CPU2 ejecuta dwc3_gadget_suspend donde encuentra dwc->gadget_driver que no es NULL y reanuda la ejecuci\u00f3n y luego CPU1 completa la ejecuci\u00f3n. CPU2 ejecuta dwc3_disconnect_gadget donde verifica que dwc->gadget_driver ya sea NULL debido a lo cual se produce la deferencia del puntero NULL."
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}
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],
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"metrics": {},
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/36695d5eeeefe5a64b47d0336e7c8fc144e78182",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/57e2e42ccd3cd6183228269715ed032f44536751",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/61a348857e869432e6a920ad8ea9132e8d44c316",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/88936ceab6b426f1312327e9ef849c215c6007a7",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/c7ebd8149ee519d27232e6e4940e9c02071b568b",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}
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]
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} |