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usb: usb-acpi: Fix oops due to freeing uninitialized pld pointer 

If reading the ACPI _PLD port location object fails, or the port
doesn't have a _PLD ACPI object then the *pld pointer will remain
uninitialized and oops when freed.

The patch that caused this is currently in next, on its way to v6.9.
So no need to add this to stable or current 6.8 kernel.

Reported-by: Klara Modin <klarasmodin@gmail.com>
Closes: https://lore.kernel.org/linux-usb/7e92369a-3197-4883-9988-3c93452704f5@gmail.com/
Tested-by: Klara Modin <klarasmodin@gmail.com>
Fixes: f3ac348e6e ("usb: usb-acpi: Set port connect type of not connectable ports correctly")
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20240308113425.1144689-1-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman 2024-03-08 13:34:25 +02:00 committed by Greg Kroah-Hartman
parent d99e42ce6b
commit a788e53c05
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/core/usb-acpi.c
View File

@ -154,7 +154,7 @@ usb_acpi_get_connect_type(struct usb_port *port_dev, acpi_handle *handle)
enum usb_port_connect_type connect_type = USB_PORT_CONNECT_TYPE_UNKNOWN;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *upc = NULL;
struct acpi_pld_info *pld;
struct acpi_pld_info *pld = NULL;
acpi_status status;
/*