2024-12-08 03:06:42 +00:00

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{
"id": "CVE-2024-50061",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-10-21T20:15:18.210",
"lastModified": "2024-10-23T21:48:29.030",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: cdns: Fix use after free vulnerability in cdns_i3c_master Driver Due to Race Condition\n\nIn the cdns_i3c_master_probe function, &master->hj_work is bound with\ncdns_i3c_master_hj. And cdns_i3c_master_interrupt can call\ncnds_i3c_master_demux_ibis function to start the work.\n\nIf we remove the module which will call cdns_i3c_master_remove to\nmake cleanup, it will free master->base through i3c_master_unregister\nwhile the work mentioned above will be used. The sequence of operations\nthat may lead to a UAF bug is as follows:\n\nCPU0 CPU1\n\n | cdns_i3c_master_hj\ncdns_i3c_master_remove |\ni3c_master_unregister(&master->base) |\ndevice_unregister(&master->dev) |\ndevice_release |\n//free master->base |\n | i3c_master_do_daa(&master->base)\n | //use master->base\n\nFix it by ensuring that the work is canceled before proceeding with\nthe cleanup in cdns_i3c_master_remove."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: i3c: master: cdns: Arreglar la vulnerabilidad de use after free en el controlador cdns_i3c_master debido a la condici\u00f3n de ejecuci\u00f3n En la funci\u00f3n cdns_i3c_master_probe, &master->hj_work est\u00e1 vinculado con cdns_i3c_master_hj. Y cdns_i3c_master_interrupt puede llamar a la funci\u00f3n cnds_i3c_master_demux_ibis para iniciar el trabajo. Si eliminamos el m\u00f3dulo que llamar\u00e1 a cdns_i3c_master_remove para realizar la limpieza, liberar\u00e1 master->base a trav\u00e9s de i3c_master_unregister mientras se usar\u00e1 el trabajo mencionado anteriormente. La secuencia de operaciones que pueden provocar un error de UAF es la siguiente: CPU0 CPU1 | cdns_i3c_master_hj cdns_i3c_master_remove | Corr\u00edjalo asegur\u00e1ndose de que el trabajo se cancele antes de continuar con la limpieza en cdns_i3c_master_remove."
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.0,
"impactScore": 5.9
}
]
},
"weaknesses": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"configurations": [
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"operator": "OR",
"negate": false,
"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"references": [
{
"url": "https://git.kernel.org/stable/c/609366e7a06d035990df78f1562291c3bf0d4a12",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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