CVE-2023-53259
In the Linux kernel, the following vulnerability has been resolved:
VMCI: check context->notify_page after call to get_user_pages_fast() to avoid GPF
The call to get_user_pages_fast() in vmci_host_setup_notify() can return NULL context->notify_page causing a GPF. To avoid GPF check if context->notify_page == NULL and return error if so.
Detalles técnicos trazas, registros y código del informe original
general protection fault, probably for non-canonical address
0xe0009d1000000060: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0x0005088000000300-
0x0005088000000307]
CPU: 2 PID: 26180 Comm: repro_34802241 Not tainted 6.1.0-rc4 #1
Hardware name: Red Hat KVM, BIOS 1.15.0-2.module+el8.6.0 04/01/2014
RIP: 0010:vmci_ctx_check_signal_notify+0x91/0xe0
Call Trace:
<TASK>
vmci_host_unlocked_ioctl+0x362/0x1f40
__x64_sys_ioctl+0x1a1/0x230
do_syscall_64+0x3a/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcdCVSS
- 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: 0.15%
- Percentil entre todas las CVEs puntuadas: 4
- 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
T1499.004Application or System Exploitationimpact75 %
AV:L + PR:L sin UI indica escalada local. Fallo de validación de puntero causa DoS por GPF (negación de servicio por falta de disponibilidad del sistema).
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 (2)
CWE
- CWE-125
Referencias
- https://git.kernel.org/stable/c/055891397f530f9b1b22be38d7eca8b08382941f
- https://git.kernel.org/stable/c/1a726cb47fd204109c767409fa9ca15a96328f14
- https://git.kernel.org/stable/c/91b8e4f61f8f4594ee65368c8d89e6fdc29d3fb1
- https://git.kernel.org/stable/c/a3c89e8c69a58f62451c0a75b77fcab25979b897
- https://git.kernel.org/stable/c/b4239bfb260d1e6837766c41a0b241d7670f1402
- https://git.kernel.org/stable/c/d4198f67e7556b1507f14f60d81a72660e5560e4
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
JSON original (NVD)
Mostrar
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