X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=patch-delta.c;h=56e0a5ede22c9396fc897bf1d3444dce92d8916f;hb=e5056c05ecd2bdaceaa95e12e9e94b1584ec59c8;hp=d218faa02bd12b0e6a0df298a6a0e5787e46d93f;hpb=c444c16589f95ac22d8e3ffe603cd7f0613512ce;p=git.git

diff --git a/patch-delta.c b/patch-delta.c
index d218faa02..56e0a5ede 100644
--- a/patch-delta.c
+++ b/patch-delta.c
@@ -48,7 +48,7 @@ void *patch_delta(const void *src_buf, unsigned long src_size,
 			if (cmd & 0x20) cp_size |= (*data++ << 8);
 			if (cmd & 0x40) cp_size |= (*data++ << 16);
 			if (cp_size == 0) cp_size = 0x10000;
-			if (cp_off + cp_size < cp_size ||
+			if (unsigned_add_overflows(cp_off, cp_size) ||
 			    cp_off + cp_size > src_size ||
 			    cp_size > size)
 				break;