CVE-2022-49917

Estado: AnalizadaAlta (7.8)—

In the Linux kernel, the following vulnerability has been resolved:

ipvs: fix WARNING in ip_vs_app_net_cleanup()

During the initialization of ip_vs_app_net_init(), if file ip_vs_app fails to be created, the initialization is successful by default. Therefore, the ip_vs_app file doesn't be found during the remove in ip_vs_app_net_cleanup(). It will cause WRNING.

Detalles técnicos trazas, registros y código del informe original

The following is the stack information:
name 'ip_vs_app'
WARNING: CPU: 1 PID: 9 at fs/proc/generic.c:712 remove_proc_entry+0x389/0x460
Modules linked in:
Workqueue: netns cleanup_net
RIP: 0010:remove_proc_entry+0x389/0x460
Call Trace:
<TASK>
ops_exit_list+0x125/0x170
cleanup_net+0x4ea/0xb00
process_one_work+0x9bf/0x1710
worker_thread+0x665/0x1080
kthread+0x2e4/0x3a0
ret_from_fork+0x1f/0x30
</TASK>

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.21%
Percentil entre todas las CVEs puntuadas: 11
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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation75 %
Impacto principalT1499.004 Application or System Exploitationimpact60 %

Vulnerabilidad local (AV:L, PR:L) en kernel Linux que permite escalada de privilegios mediante manipulación de procfs durante limpieza de netns, causando DoS por WARNING/crash.

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

Threat Intelligence Program Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

NVD-CWE-noinfo

Referencias

JSON original (NVD)

Mostrar

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: fix WARNING in ip_vs_app_net_cleanup()\n\nDuring the initialization of ip_vs_app_net_init(), if file ip_vs_app\nfails to be created, the initialization is successful by default.\nTherefore, the ip_vs_app file doesn't be found during the remove in\nip_vs_app_net_cleanup(). It will cause WRNING.\n\nThe following is the stack information:\nname 'ip_vs_app'\nWARNING: CPU: 1 PID: 9 at fs/proc/generic.c:712 remove_proc_entry+0x389/0x460\nModules linked in:\nWorkqueue: netns cleanup_net\nRIP: 0010:remove_proc_entry+0x389/0x460\nCall Trace:\n<TASK>\nops_exit_list+0x125/0x170\ncleanup_net+0x4ea/0xb00\nprocess_one_work+0x9bf/0x1710\nworker_thread+0x665/0x1080\nkthread+0x2e4/0x3a0\nret_from_fork+0x1f/0x30\n</TASK>"
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipvs: corrección de una advertencia en ip_vs_app_net_cleanup(). Durante la inicialización de ip_vs_app_net_init(), si no se crea el archivo ip_vs_app, la inicialización se realiza correctamente por defecto. Por lo tanto, el archivo ip_vs_app no se encuentra durante la eliminación en ip_vs_app_net_cleanup(). Esto provocará un error WRNING. La siguiente es la información de la pila: nombre 'ip_vs_app' ADVERTENCIA: CPU: 1 PID: 9 en fs/proc/generic.c:712 remove_proc_entry+0x389/0x460 Módulos vinculados en: Cola de trabajo: netns cleanup_net RIP: 0010:remove_proc_entry+0x389/0x460 Seguimiento de llamadas:  ops_exit_list+0x125/0x170 cleanup_net+0x4ea/0xb00 process_one_work+0x9bf/0x1710 worker_thread+0x665/0x1080 kthread+0x2e4/0x3a0 ret_from_fork+0x1f/0x30  "
    }
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