X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/halibut/blobdiff_plain/f4944c7cf92f243fd5c48361c6012e84f71fb545..2901c406fda763902b1e77263ec273187f7dc75b:/deflate.c

diff --git a/deflate.c b/deflate.c
index ecae0d0..5bb3cce 100644
--- a/deflate.c
+++ b/deflate.c
@@ -2443,6 +2443,10 @@ int deflate_decompress_data(deflate_decompress_ctx *dctx,
 		goto finished;
 	    nlen = dctx->bits & 0xFFFF;
 	    EATBITS(16);
+	    if (dctx->uncomplen != (nlen ^ 0xFFFF)) {
+                error = DEFLATE_ERR_UNCOMP_HDR;
+                goto finished;
+            }
 	    if (dctx->uncomplen == 0)
 		dctx->state = OUTSIDEBLK;	/* block is empty */
 	    else