commit 1059af8ae14e0fc1679da43ca047152d2fc4de94
author Aleksandr Krasavin <akrasav@google.com> Tue Dec 17 01:19:04 2024 -0800
committer Gerrit Code Review <noreply-gerritcodereview@google.com> Tue Dec 17 01:19:04 2024 -0800
tree d70fb1bc18fb31fdf47be6784e35d2ebce66b3ee
parent 57506c9ad6e6081f947914b7c8601747b648b7e7
parent 17388679ee60432138327c65bbbf8337ae69234b

Merge "Fix pointer arithmetics in libufdt" into main

ufdt_convert.c

diff --git a/ufdt_convert.c b/ufdt_convert.c
index 8147f5b..c6df018 100644
--- a/ufdt_convert.c
+++ b/ufdt_convert.c
@@ -366,7 +366,7 @@
       (struct fdt_property *)((char *)fdtp + fdt_off_dt_struct(fdtp) +
                               new_propoff);
   char *fdt_end = (char *)fdtp + fdt_totalsize(fdtp);
-  if ((char *)new_prop + new_prop_size > fdt_end) {
+  if (fdt_end - (char *)new_prop < (ptrdiff_t)new_prop_size) {
     dto_error("Not enough space for adding property.\n");
     return -1;
   }