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nvd-json-data-feeds/CVE-2024/CVE-2024-395xx/CVE-2024-39506.json
cad-safe-bot e6cbafdc40 Auto-Update: 2024-12-08T03:00:18.988682+00:00
2024-12-08 03:06:42 +00:00

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{
"id": "CVE-2024-39506",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-07-12T13:15:12.957",
"lastModified": "2024-11-21T09:27:51.840",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nliquidio: Adjust a NULL pointer handling path in lio_vf_rep_copy_packet\n\nIn lio_vf_rep_copy_packet() pg_info->page is compared to a NULL value,\nbut then it is unconditionally passed to skb_add_rx_frag() which looks\nstrange and could lead to null pointer dereference.\n\nlio_vf_rep_copy_packet() call trace looks like:\n\tocteon_droq_process_packets\n\t octeon_droq_fast_process_packets\n\t octeon_droq_dispatch_pkt\n\t octeon_create_recv_info\n\t ...search in the dispatch_list...\n\t ->disp_fn(rdisp->rinfo, ...)\n\t lio_vf_rep_pkt_recv(struct octeon_recv_info *recv_info, ...)\nIn this path there is no code which sets pg_info->page to NULL.\nSo this check looks unneeded and doesn't solve potential problem.\nBut I guess the author had reason to add a check and I have no such card\nand can't do real test.\nIn addition, the code in the function liquidio_push_packet() in\nliquidio/lio_core.c does exactly the same.\n\nBased on this, I consider the most acceptable compromise solution to\nadjust this issue by moving skb_add_rx_frag() into conditional scope.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: liquidio: ajusta una ruta de manejo de puntero NULL en lio_vf_rep_copy_packet En lio_vf_rep_copy_packet() pg_info->page se compara con un valor NULL, pero luego se pasa incondicionalmente a skb_add_rx_frag() lo cual parece extra\u00f1o y podr\u00eda provocar una desreferencia del puntero nulo. El seguimiento de llamadas de lio_vf_rep_copy_packet() se ve as\u00ed: octeon_droq_process_packets octeon_droq_fast_process_packets octeon_droq_dispatch_pkt octeon_create_recv_info ...buscar en la lista de despacho... ->disp_fn(rdisp->rinfo, ...) lio_vf_rep_pkt_recv(struct octeon_recv_info *rec v_info, ...) En este camino hay No hay ning\u00fan c\u00f3digo que establezca pg_info->page en NULL. Por lo tanto, esta verificaci\u00f3n parece innecesaria y no resuelve el problema potencial. Pero supongo que el autor ten\u00eda motivos para agregar un cheque y yo no tengo esa tarjeta y no puedo hacer una prueba real. Adem\u00e1s, el c\u00f3digo de la funci\u00f3n liquidio_push_packet() en liquidio/lio_core.c hace exactamente lo mismo. En base a esto, considero la soluci\u00f3n de compromiso m\u00e1s aceptable para ajustar este problema moviendo skb_add_rx_frag() al alcance condicional. Encontrado por el Centro de verificaci\u00f3n de Linux (linuxtesting.org) con SVACE."
}
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"source": "nvd@nist.gov",
"type": "Primary",
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"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
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},
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"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
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