gsd-2021-46973
Vulnerability from gsd
Modified
2024-02-28 06:03
Details
In the Linux kernel, the following vulnerability has been resolved:
net: qrtr: Avoid potential use after free in MHI send
It is possible that the MHI ul_callback will be invoked immediately
following the queueing of the skb for transmission, leading to the
callback decrementing the refcount of the associated sk and freeing the
skb.
As such the dereference of skb and the increment of the sk refcount must
happen before the skb is queued, to avoid the skb to be used after free
and potentially the sk to drop its last refcount..
Aliases
{
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: Avoid potential use after free in MHI send\n\nIt is possible that the MHI ul_callback will be invoked immediately\nfollowing the queueing of the skb for transmission, leading to the\ncallback decrementing the refcount of the associated sk and freeing the\nskb.\n\nAs such the dereference of skb and the increment of the sk refcount must\nhappen before the skb is queued, to avoid the skb to be used after free\nand potentially the sk to drop its last refcount..",
"id": "GSD-2021-46973",
"modified": "2024-02-28T06:03:57.783614Z",
"schema_version": "1.4.0"
}
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"version": "5.10.35",
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"version": "5.11.19",
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: Avoid potential use after free in MHI send\n\nIt is possible that the MHI ul_callback will be invoked immediately\nfollowing the queueing of the skb for transmission, leading to the\ncallback decrementing the refcount of the associated sk and freeing the\nskb.\n\nAs such the dereference of skb and the increment of the sk refcount must\nhappen before the skb is queued, to avoid the skb to be used after free\nand potentially the sk to drop its last refcount.."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: qrtr: Evite el potencial use after free en el env\u00edo MHI. Es posible que MHI ul_callback se invoque inmediatamente despu\u00e9s de la puesta en cola del skb para la transmisi\u00f3n, lo que provocar\u00e1 que la devoluci\u00f3n de llamada disminuya el recuento del sk asociado y liberaci\u00f3n del skb. Como tal, la desreferencia de skb y el incremento del refcount de sk deben ocurrir antes de que el skb se ponga en cola, para evitar que el skb haga use after free y potencialmente que el sk elimine su \u00faltimo refcount."
}
],
"id": "CVE-2021-46973",
"lastModified": "2024-02-28T14:06:45.783",
"metrics": {},
"published": "2024-02-27T19:04:07.457",
"references": [
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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}
}
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