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{
"id": "CVE-2024-43890",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-08-26T11:15:04.040",
"lastModified": "2024-09-05T18:48:30.320",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix overflow in get_free_elt()\n\n\"tracing_map->next_elt\" in get_free_elt() is at risk of overflowing.\n\nOnce it overflows, new elements can still be inserted into the tracing_map\neven though the maximum number of elements (`max_elts`) has been reached.\nContinuing to insert elements after the overflow could result in the\ntracing_map containing \"tracing_map->max_size\" elements, leaving no empty\nentries.\nIf any attempt is made to insert an element into a full tracing_map using\n`__tracing_map_insert()`, it will cause an infinite loop with preemption\ndisabled, leading to a CPU hang problem.\n\nFix this by preventing any further increments to \"tracing_map->next_elt\"\nonce it reaches \"tracing_map->max_elt\"."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rastreo: corrige el desbordamiento en get_free_elt() \"tracing_map->next_elt\" en get_free_elt() corre el riesgo de desbordarse. Una vez que se desborda, a\u00fan se pueden insertar nuevos elementos en tracing_map aunque se haya alcanzado el n\u00famero m\u00e1ximo de elementos (`max_elts`). Continuar insertando elementos despu\u00e9s del desbordamiento podr\u00eda dar como resultado que tracing_map contenga elementos \"tracing_map->max_size\", sin dejar entradas vac\u00edas. Si se intenta insertar un elemento en un tracing_map completo usando `__tracing_map_insert()`, se producir\u00e1 un bucle infinito con la preferencia deshabilitada, lo que provocar\u00e1 un problema de bloqueo de la CPU. Solucione este problema evitando incrementos adicionales en \"tracing_map->next_elt\" una vez que llegue a \"tracing_map->max_elt\"."
}
],
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{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
]
},
"weaknesses": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-190"
}
]
}
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