X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fgit.git;a=blobdiff_plain;f=patch-delta.c;h=56e0a5ede22c9396fc897bf1d3444dce92d8916f;hp=d218faa02bd12b0e6a0df298a6a0e5787e46d93f;hb=6578483036695820d05aa7cf482a38169ad321bf;hpb=7b576f9910a2945688f04f6ff9d03771f2956618

diff --git a/patch-delta.c b/patch-delta.c
index d218faa02b..56e0a5ede2 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;