CVE-2025-71133
Estado: AnalizadaAlta (7.1)—
In the Linux kernel, the following vulnerability has been resolved:
RDMA/irdma: avoid invalid read in irdma_net_event
irdma_net_event() should not dereference anything from "neigh" (alias "ptr") until it has checked that the event is NETEVENT_NEIGH_UPDATE. Other events come with different structures pointed to by "ptr" and they may be smaller than struct neighbour.
Move the read of neigh->dev under the NETEVENT_NEIGH_UPDATE case.
The bug is mostly harmless, but it triggers KASAN on debug kernels:
Detalles técnicos trazas, registros y código del informe original
BUG: KASAN: stack-out-of-bounds in irdma_net_event+0x32e/0x3b0 [irdma] Read of size 8 at addr ffffc900075e07f0 by task kworker/27:2/542554 CPU: 27 PID: 542554 Comm: kworker/27:2 Kdump: loaded Not tainted 5.14.0-630.el9.x86_64+debug #1 Hardware name: [...] Workqueue: events rt6_probe_deferred Call Trace: <IRQ> dump_stack_lvl+0x60/0xb0 print_address_description.constprop.0+0x2c/0x3f0 print_report+0xb4/0x270 kasan_report+0x92/0xc0 irdma_net_event+0x32e/0x3b0 [irdma] notifier_call_chain+0x9e/0x180 atomic_notifier_call_chain+0x5c/0x110 rt6_do_redirect+0xb91/0x1080 tcp_v6_err+0xe9b/0x13e0 icmpv6_notify+0x2b2/0x630 ndisc_redirect_rcv+0x328/0x530 icmpv6_rcv+0xc16/0x1360 ip6_protocol_deliver_rcu+0xb84/0x12e0 ip6_input_finish+0x117/0x240 ip6_input+0xc4/0x370 ipv6_rcv+0x420/0x7d0 __netif_receive_skb_one_core+0x118/0x1b0 process_backlog+0xd1/0x5d0 __napi_poll.constprop.0+0xa3/0x440 net_rx_action+0x78a/0xba0 handle_softirqs+0x2d4/0x9c0 do_softirq+0xad/0xe0 </IRQ>
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Puntuación base: 7.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.18%
- Percentil entre todas las CVEs puntuadas: 7
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation85 % - Impacto principal
T1059Command and Scripting Interpreterexecution45 %
AV:L/PR:L indica acceso local con privilegios. CWE-125 es lectura fuera de límites. Aunque el texto señala que es 'mostly harmless', la vulnerabilidad permite lectura de memoria (C:H) y potencial DoS (A:H), no ejecución de código directa, por lo que el impacto T1059 es secundario a la exfiltración d
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-125
Referencias
- https://git.kernel.org/stable/c/305c02e541befe4a44ffde30ed374970f41aeb6c
- https://git.kernel.org/stable/c/6f05611728e9d0ab024832a4f1abb74a5f5d0bb0
- https://git.kernel.org/stable/c/bf197c7c79ef6458d1ee84dd7db251b51784885f
- https://git.kernel.org/stable/c/d9b9affd103f51b42322da4ed5ac025b560bc354
- https://git.kernel.org/stable/c/db93ae6fa66f1c61ae63400191195e3ee58021da
- https://git.kernel.org/stable/c/fc23d05f0b3fb4d80657e7afebae2cae686b31c8
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: avoid invalid read in irdma_net_event\n\nirdma_net_event() should not dereference anything from \"neigh\" (alias\n\"ptr\") until it has checked that the event is NETEVENT_NEIGH_UPDATE.\nOther events come with different structures pointed to by \"ptr\" and they\nmay be smaller than struct neighbour.\n\nMove the read of neigh->dev under the NETEVENT_NEIGH_UPDATE case.\n\nThe bug is mostly harmless, but it triggers KASAN on debug kernels:\n\n BUG: KASAN: stack-out-of-bounds in irdma_net_event+0x32e/0x3b0 [irdma]\n Read of size 8 at addr ffffc900075e07f0 by task kworker/27:2/542554\n\n CPU: 27 PID: 542554 Comm: kworker/27:2 Kdump: loaded Not tainted 5.14.0-630.el9.x86_64+debug #1\n Hardware name: [...]\n Workqueue: events rt6_probe_deferred\n Call Trace:\n <IRQ>\n dump_stack_lvl+0x60/0xb0\n print_address_description.constprop.0+0x2c/0x3f0\n print_report+0xb4/0x270\n kasan_report+0x92/0xc0\n irdma_net_event+0x32e/0x3b0 [irdma]\n notifier_call_chain+0x9e/0x180\n atomic_notifier_call_chain+0x5c/0x110\n rt6_do_redirect+0xb91/0x1080\n tcp_v6_err+0xe9b/0x13e0\n icmpv6_notify+0x2b2/0x630\n ndisc_redirect_rcv+0x328/0x530\n icmpv6_rcv+0xc16/0x1360\n ip6_protocol_deliver_rcu+0xb84/0x12e0\n ip6_input_finish+0x117/0x240\n ip6_input+0xc4/0x370\n ipv6_rcv+0x420/0x7d0\n __netif_receive_skb_one_core+0x118/0x1b0\n process_backlog+0xd1/0x5d0\n __napi_poll.constprop.0+0xa3/0x440\n net_rx_action+0x78a/0xba0\n handle_softirqs+0x2d4/0x9c0\n do_softirq+0xad/0xe0\n </IRQ>"
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nRDMA/irdma: evitar lectura inválida en irdma_net_event\n\nirdma_net_event() no debería desreferenciar nada de 'neigh' (alias 'ptr') hasta que haya comprobado que el evento es NETEVENT_NEIGH_UPDATE. Otros eventos vienen con diferentes estructuras apuntadas por 'ptr' y pueden ser más pequeñas que struct neighbour.\n\nMover la lectura de neigh->dev bajo el caso NETEVENT_NEIGH_UPDATE.\n\nEl error es mayormente inofensivo, pero activa KASAN en kernels de depuración:\n\n ERROR: KASAN: desbordamiento de pila en irdma_net_event+0x32e/0x3b0 [irdma]\n Lectura de tamaño 8 en la dirección ffffc900075e07f0 por la tarea kworker/27:2/542554\n\n CPU: 27 PID: 542554 Comm: kworker/27:2 Kdump: loaded Not tainted 5.14.0-630.el9.x86_64+debug #1\n Hardware name: [...]\n Workqueue: events rt6_probe_deferred\n Rastro de Llamada:\n \n dump_stack_lvl+0x60/0xb0\n print_address_description.constprop.0+0x2c/0x3f0\n print_report+0xb4/0x270\n kasan_report+0x92/0xc0\n irdma_net_event+0x32e/0x3b0 [irdma]\n notifier_call_chain+0x9e/0x180\n atomic_notifier_call_chain+0x5c/0x110\n rt6_do_redirect+0xb91/0x1080\n tcp_v6_err+0xe9b/0x13e0\n icmpv6_notify+0x2b2/0x630\n ndisc_redirect_rcv+0x328/0x530\n icmpv6_rcv+0xc16/0x1360\n ip6_protocol_deliver_rcu+0xb84/0x12e0\n ip6_input_finish+0x117/0x240\n ip6_input+0xc4/0x370\n ipv6_rcv+0x420/0x7d0\n __netif_receive_skb_one_core+0x118/0x1b0\n process_backlog+0xd1/0x5d0\n __napi_poll.constprop.0+0xa3/0x440\n net_rx_action+0x78a/0xba0\n handle_softirqs+0x2d4/0x9c0\n do_softirq+0xad/0xe0\n "
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"lastModified": "2026-06-17T10:03:43.903",
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