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-rw-r--r--tools/qt-faststart.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/qt-faststart.c b/tools/qt-faststart.c
index 5c511a0154..792c272193 100644
--- a/tools/qt-faststart.c
+++ b/tools/qt-faststart.c
@@ -239,6 +239,10 @@ int main(int argc, char *argv[])
goto error_out;
}
offset_count = BE_32(&moov_atom[i + 8]);
+ if (i + 12 + offset_count * UINT64_C(4) > moov_atom_size) {
+ printf(" bad atom size/element count\n");
+ goto error_out;
+ }
for (j = 0; j < offset_count; j++) {
current_offset = BE_32(&moov_atom[i + 12 + j * 4]);
current_offset += moov_atom_size;
@@ -256,6 +260,10 @@ int main(int argc, char *argv[])
goto error_out;
}
offset_count = BE_32(&moov_atom[i + 8]);
+ if (i + 12 + offset_count * UINT64_C(8) > moov_atom_size) {
+ printf(" bad atom size/element count\n");
+ goto error_out;
+ }
for (j = 0; j < offset_count; j++) {
current_offset = BE_64(&moov_atom[i + 12 + j * 8]);
current_offset += moov_atom_size;