Validate the return value of fdt_get_name() as an ill-formed DT, causing
it to fail, could result in fdt_check_full() dereferencing NULL.
fixes: a2def5479950 ("libfdt: Check that the root-node name is empty")
Signed-off-by: Pierre-Clément Tosi <ptosi@xxxxxxxxxx>
---
libfdt/fdt_check.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libfdt/fdt_check.c b/libfdt/fdt_check.c
index fa410a8..71390ee 100644
--- a/libfdt/fdt_check.c
+++ b/libfdt/fdt_check.c
@@ -66,7 +66,7 @@ int fdt_check_full(const void *fdt, size_t bufsize)
int len;
name = fdt_get_name(fdt, offset, &len);
- if (*name || len)
+ if (!name || *name || len)
return -FDT_ERR_BADSTRUCTURE;
}
break;
--
2.37.0.170.g444d1eabd0-goog
