CVE-2022-50411
ACPICA: Fix error code path in acpi_ds_call_control_method()
In the Linux kernel, the following vulnerability has been resolved:
ACPICA: Fix error code path in acpi_ds_call_control_method()
A use-after-free in acpi_ps_parse_aml() after a failing invocaion of
acpi_ds_call_control_method() is reported by KASAN [1] and code
inspection reveals that next_walk_state pushed to the thread by
acpi_ds_create_walk_state() is freed on errors, but it is not popped
from the thread beforehand. Thus acpi_ds_get_current_walk_state()
called by acpi_ps_parse_aml() subsequently returns it as the new
walk state which is incorrect.
To address this, make acpi_ds_call_control_method() call
acpi_ds_pop_walk_state() to pop next_walk_state from the thread before
returning an error.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Productos afectados
Linux · Linux¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →Referencias
https://git.kernel.org/stable/c/0462fec709d51762ba486245bc344f44cc6cfa97https://git.kernel.org/stable/c/2deb42c4f9776e59bee247c14af9c5e8c05ca9a6https://git.kernel.org/stable/c/38e251d356a01b61a86cb35213cafd7e8fe7090chttps://git.kernel.org/stable/c/404ec60438add1afadaffaed34bb5fe4ddcadd40https://git.kernel.org/stable/c/5777432ebaaf797e24f059979b42df3139967163https://git.kernel.org/stable/c/799881db3e03b5e98fe6a900d9d7de8c7d61e7eehttps://git.kernel.org/stable/c/9ef353c92f9d04c88de3af1a46859c1fb76db0f8https://git.kernel.org/stable/c/b0b83d3f3ffa96e8395c56b83d6197e184902a34https://git.kernel.org/stable/c/f520d181477ec29a496c0b3bbfbdb7e2606c2713