Fix possible out of bounds access
Bug: 28868315
Change-Id: I2b416c662f9ad7f9b3c6cf973a39c6693c66775a
diff --git a/exif.c b/exif.c
index 8dfdaf1..0abfa1d 100644
--- a/exif.c
+++ b/exif.c
@@ -614,7 +614,7 @@
unsigned OffsetVal;
OffsetVal = Get32u(DirEntry+8);
// If its bigger than 4 bytes, the dir entry contains an offset.
- if (OffsetVal+ByteCount > ExifLength){
+ if (OffsetVal > UINT32_MAX - ByteCount || OffsetVal+ByteCount > ExifLength){
// Bogus pointer offset and / or bytecount value
ErrNonfatal("Illegal value pointer for tag %04x", Tag,0);
continue;