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{
"id": "CVE-2021-47259",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-05-21T15:15:14.610",
"lastModified": "2024-05-21T16:54:26.047",
"vulnStatus": "Awaiting Analysis",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFS: Fix use-after-free in nfs4_init_client()\n\nKASAN reports a use-after-free when attempting to mount two different\nexports through two different NICs that belong to the same server.\n\nOlga was able to hit this with kernels starting somewhere between 5.7\nand 5.10, but I traced the patch that introduced the clear_bit() call to\n4.13. So something must have changed in the refcounting of the clp\npointer to make this call to nfs_put_client() the very last one."
},
{
"lang": "es",
"value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: core: corrige el manejo de errores de scsi_host_alloc(). Despu\u00e9s de que el dispositivo se inicializa mediante device_initialize(), o su nombre se establece mediante dev_set_name(), el dispositivo debe liberarse mediante put_device (). De lo contrario, se filtrar\u00e1 el nombre del dispositivo porque se asigna din\u00e1micamente en dev_set_name(). Solucione la fuga reemplazando kfree() con put_device(). Dado que scsi_host_dev_release() maneja adecuadamente la eliminaci\u00f3n de IDA y kthread, elimine tambi\u00e9n estas may\u00fasculas y min\u00fasculas especiales del manejo de errores."
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/3e3c7ebbfac152d08be75c92802a64a1f6471a15",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/42c10b0db064e45f5c5ae7019bbf2168ffab766c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/476bdb04c501fc64bf3b8464ffddefc8dbe01577",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/72651c6579a25317a90536181d311c663d0329ab",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c3b6cf64dfe4ef96e7341508d50d6998da7062c7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c7eab9e2d7b4e983ce280276fb920af649955897",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}