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CVE-2022-49029

Estado: ModificadaAlta (7.8)—

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

hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails

Smatch report warning as follows:

If ibmpex_find_sensors() fails in ibmpex_register_bmc(), data will be freed, but data->list will not be removed from driver_data.bmc_data, then list traversal may cause UAF.

Fix by removeing it from driver_data.bmc_data before free().

Detalles técnicos trazas, registros y código del informe original
drivers/hwmon/ibmpex.c:509 ibmpex_register_bmc() warn:
  '&data->list' not removed from list

CVSS

Probabilidad de explotación (EPSS)

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.

AV:L/PR:L sin UI permite escalada local; UAF en ibmpex podría permitir ejecución de código al manipular el kernel después de liberación de memoria.

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 ProgramExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails\n\nSmatch report warning as follows:\n\ndrivers/hwmon/ibmpex.c:509 ibmpex_register_bmc() warn:\n  '&data->list' not removed from list\n\nIf ibmpex_find_sensors() fails in ibmpex_register_bmc(), data will\nbe freed, but data->list will not be removed from driver_data.bmc_data,\nthen list traversal may cause UAF.\n\nFix by removeing it from driver_data.bmc_data before free()."
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