CVE-2026-90340

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

pinctrl: generic: free maps on pinctrl_generic_to_map() failure

pinctrl_generic_to_map() parses DT configuration and allocates pinctrl

maps via pinctrl_utils_reserve_map().

If subsequent steps (such as pinctrl_utils_add_map_mux(),

pinctrl_generic_add_group(), pinconf_generic_parse_dt_config(), or

pinctrl_utils_add_map_configs()) return an error, *maps may contain

partially allocated map entries. Returning the error directly without

freeing *maps leaks the allocated mapping memory across all drivers

that rely on pinctrl_generic_to_map().

Fix this by calling pinctrl_utils_free_map() and resetting *maps,

*num_maps, and *num_reserved_maps in the error path of

pinctrl_generic_to_map().