cmd: ini: avoid NULL deref when loadaddr/filesize env vars are unset

When the user runs "ini <section>" without explicit address or size
arguments, do_ini() falls back to env_get("loadaddr") and
env_get("filesize") and passes the results straight to hextoul().
env_get() returns NULL for an undefined variable and hextoul() does
not tolerate a NULL pointer, so on a board without these variables
set the command dereferences NULL.

Fetch the strings into locals first, reject the NULL case with
CMD_RET_USAGE, and only then convert to numeric values.

Fixes: c167cc02033 ("Add a new "ini" command")
Signed-off-by: Naveen Kumar Chaudhary <[email protected]>

0 files changed, 0 insertions, 0 deletions