env default -a -f calls env_check_apply on all existing environment variables with a NULL value for "newval" as a way of cleaning up. This causes string manipulation functions to crash on most architectures. So replace a NULL argument with an empty string.
Reported-By: Stefano Babic sbabic@denx.de Signed-off-by: Gerlando Falauto gerlando.falauto@keymile.com --- common/cmd_nvedit.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index 3474bc6..c38b475 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -213,6 +213,9 @@ int env_check_apply(const char *name, const char *oldval, { int console = -1;
+ /* Default value for NULL to protect string-manipulating functions */ + newval = newval ? : ""; + /* Check for console redirection */ if (strcmp(name, "stdin") == 0) console = stdin;