From 3c9d0414ed2db0167e6c828b547be8fc9f88fccc Mon Sep 17 00:00:00 2001
From: Greg Brockman <gdb@MIT.EDU>
Date: Tue, 20 Jul 2010 00:46:21 -0400
Subject: Check size of path buffer before writing into it

This prevents a buffer overrun that could otherwise be triggered by
creating a file called '.git' with contents

  gitdir: (something really long)

Signed-off-by: Greg Brockman <gdb@mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/setup.c b/setup.c
index 0e4cfe6..3bb0461 100644
--- a/setup.c
+++ b/setup.c
@@ -170,6 +170,8 @@ static int is_git_directory(const char *suspect)
 	char path[PATH_MAX];
 	size_t len = strlen(suspect);
 
+	if (PATH_MAX <= len + strlen("/objects"))
+		die("Too long path: %.*s", 60, suspect);
 	strcpy(path, suspect);
 	if (getenv(DB_ENVIRONMENT)) {
 		if (access(getenv(DB_ENVIRONMENT), X_OK))
-- 
cgit v0.10.2-6-g49f6