جزئیات آسیب‌پذیری

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.

• https://git.kernel.org/stable/c/38e251d356a01b61a86cb35213cafd7e8fe7090c
• https://git.kernel.org/stable/c/f520d181477ec29a496c0b3bbfbdb7e2606c2713
• https://git.kernel.org/stable/c/2deb42c4f9776e59bee247c14af9c5e8c05ca9a6
• https://git.kernel.org/stable/c/9ef353c92f9d04c88de3af1a46859c1fb76db0f8
• https://git.kernel.org/stable/c/b0b83d3f3ffa96e8395c56b83d6197e184902a34
• https://git.kernel.org/stable/c/5777432ebaaf797e24f059979b42df3139967163
• https://git.kernel.org/stable/c/0462fec709d51762ba486245bc344f44cc6cfa97
• https://git.kernel.org/stable/c/799881db3e03b5e98fe6a900d9d7de8c7d61e7ee
• https://git.kernel.org/stable/c/404ec60438add1afadaffaed34bb5fe4ddcadd40