CVE-2024-27048

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: brcm80211: maneja el error de asignación de pmk_op El kzalloc() en brcmf_pmksa_v3_op() devolverá nulo si la memoria física se ha agotado. Como resultado, si eliminamos la referencia del valor nulo, se producirá el error de desreferencia del puntero nulo. Devuelve -ENOMEM de brcmf_pmksa_v3_op() si kzalloc() falla para pmk_op.

A vulnerability was found in the Linux kernel's Wi-Fi cfg80211.c driver, where a lack of proper checks can result in a NULL pointer dereference. This issue occurs when the brcmf_pmksa_v3_op() function attempts to call malloc (), but the physical memory has run out. In this situation, kzalloc() will return NULL, which the function does not check before using it in the corresponding value pmk_op., possibly leading to system instability.