From 9802a0162f738de03585ca3f3b8a8266494f7d45 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Tue, 9 Dec 2014 09:30:59 -0800 Subject: [PATCH 1/2] Missing parens in REQUEST_FIXED_SIZE macro [CVE-2014-8092 pt. 5] The 'n' parameter must be surrounded by parens in both places to prevent precedence from mis-computing things. Signed-off-by: Keith Packard Reviewed-by: Alan Coopersmith Signed-off-by: Alan Coopersmith --- include/dix.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/dix.h b/include/dix.h index 21176a8..921156b 100644 --- a/include/dix.h +++ b/include/dix.h @@ -80,7 +80,7 @@ SOFTWARE. #define REQUEST_FIXED_SIZE(req, n)\ if (((sizeof(req) >> 2) > client->req_len) || \ - ((n >> 2) >= client->req_len) || \ + (((n) >> 2) >= client->req_len) || \ ((((uint64_t) sizeof(req) + (n) + 3) >> 2) != (uint64_t) client->req_len)) \ return(BadLength) -- 2.1.0