From 2be5e86ce04e9a6ab9f87b9f63de08af75041d29 Mon Sep 17 00:00:00 2001 From: tholo Date: Sat, 5 Apr 1997 05:05:44 +0000 Subject: [PATCH] Check for overflow; from FreeBSD --- lib/libc/stdlib/malloc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c index da2c17b83d1..fc82a4f4190 100644 --- a/lib/libc/stdlib/malloc.c +++ b/lib/libc/stdlib/malloc.c @@ -8,7 +8,7 @@ */ #if defined(LIBC_SCCS) && !defined(lint) -static char rcsid[] = "$OpenBSD: malloc.c,v 1.22 1997/02/11 17:46:36 niklas Exp $"; +static char rcsid[] = "$OpenBSD: malloc.c,v 1.23 1997/04/05 05:05:44 tholo Exp $"; #endif /* LIBC_SCCS and not lint */ /* @@ -756,7 +756,9 @@ imalloc(size) if (suicide) abort(); - if (size <= malloc_maxsize) + if ((size + malloc_pagesize) < size) /* Check for overflow */ + result = 0; + else if (size <= malloc_maxsize) result = malloc_bytes(size); else result = malloc_pages(size); -- 2.20.1