mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
synced 2025-05-31 10:41:19 +00:00
29 lines
2.8 KiB
JSON
29 lines
2.8 KiB
JSON
{
|
|
"id": "CVE-2022-48867",
|
|
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"published": "2024-08-21T07:15:03.860",
|
|
"lastModified": "2024-08-21T12:30:33.697",
|
|
"vulnStatus": "Awaiting Analysis",
|
|
"cveTags": [],
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Prevent use after free on completion memory\n\nOn driver unload any pending descriptors are flushed at the\ntime the interrupt is freed:\nidxd_dmaengine_drv_remove() ->\n\tdrv_disable_wq() ->\n\t\tidxd_wq_free_irq() ->\n\t\t\tidxd_flush_pending_descs().\n\nIf there are any descriptors present that need to be flushed this\nflow triggers a \"not present\" page fault as below:\n\n BUG: unable to handle page fault for address: ff391c97c70c9040\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n\nThe address that triggers the fault is the address of the\ndescriptor that was freed moments earlier via:\ndrv_disable_wq()->idxd_wq_free_resources()\n\nFix the use after free by freeing the descriptors after any possible\nusage. This is done after idxd_wq_reset() to ensure that the memory\nremains accessible during possible completion writes by the device."
|
|
},
|
|
{
|
|
"lang": "es",
|
|
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dmaengine: idxd: evita el use after free la memoria al finalizar. Al descargar el controlador, los descriptores pendientes se eliminan en el momento en que se libera la interrupci\u00f3n: idxd_dmaengine_drv_remove() -> drv_disable_wq() -> idxd_wq_free_irq () -> idxd_flush_pending_descs(). Si hay alg\u00fan descriptor presente que deba eliminarse, este flujo desencadena un error de p\u00e1gina \"no presente\" como se muestra a continuaci\u00f3n: ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: ff391c97c70c9040 #PF: acceso de lectura del supervisor en modo kernel #PF: error_code(0x0000 ) - p\u00e1gina no presente La direcci\u00f3n que desencadena la falla es la direcci\u00f3n del descriptor que se liber\u00f3 momentos antes a trav\u00e9s de: drv_disable_wq()->idxd_wq_free_resources() Corrige el use-after-free liberando los descriptores despu\u00e9s de cualquier posible uso. Esto se hace despu\u00e9s de idxd_wq_reset() para garantizar que la memoria permanezca accesible durante posibles escrituras completas por parte del dispositivo."
|
|
}
|
|
],
|
|
"metrics": {},
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/1beeec45f9ac31eba52478379f70a5fa9c2ad005",
|
|
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/b9e8e3fcfec625fc1c2f68f684448aeeb882625b",
|
|
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
|
|
}
|
|
]
|
|
} |