CVE-2024-53126

Estado: ModificadaAlta (7.8)—

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

vdpa: solidrun: Fix UB bug with devres

In psnet_open_pf_bar() and snet_open_vf_bar() a string later passed to pcim_iomap_regions() is placed on the stack. Neither pcim_iomap_regions() nor the functions it calls copy that string.

Should the string later ever be used, this, consequently, causes undefined behavior since the stack frame will by then have disappeared.

Fix the bug by allocating the strings on the heap through devm_kasprintf().

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: 5/10/2026

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 escalation85 %
Impacto principalT1059 Command and Scripting Interpreterexecution70 %
Impacto secundarioT1499.004 Application or System Exploitationimpact65 %

Vector CVSS con AV:L/PR:L/UI:N indica escalada local sin interacción (T1068). La corrupción de memoria por undefined behavior puede permitir ejecución de código (T1059) o DoS (T1499.004) cuando se desreferencia un puntero inválido de la pila.

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

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Filter Network Traffic

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\nvdpa: solidrun: Fix UB bug with devres\n\nIn psnet_open_pf_bar() and snet_open_vf_bar() a string later passed to\npcim_iomap_regions() is placed on the stack. Neither\npcim_iomap_regions() nor the functions it calls copy that string.\n\nShould the string later ever be used, this, consequently, causes\nundefined behavior since the stack frame will by then have disappeared.\n\nFix the bug by allocating the strings on the heap through\ndevm_kasprintf()."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vdpa: solidrun: Fix UB bug with devres En psnet_open_pf_bar() y snet_open_vf_bar(), una cadena que luego se pasa a pcim_iomap_regions() se coloca en la pila. Ni pcim_iomap_regions() ni las funciones que llama copian esa cadena. Si la cadena se utiliza más tarde, esto, en consecuencia, provoca un comportamiento indefinido ya que el marco de la pila habrá desaparecido para entonces. Corrija el error asignando las cadenas en el montón a través de devm_kasprintf()."
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