From 737e31af7ae365d6251bb196e06d18afda9c98a8 Mon Sep 17 00:00:00 2001
From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 17 Dec 2008 12:37:48 -0800
Subject: [PATCH] make_absolute_path(): check bounds when seeing an overlong
 symlink

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 abspath.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/abspath.c b/abspath.c
index 8194ce125..649f34f83 100644
--- a/abspath.c
+++ b/abspath.c
@@ -64,6 +64,8 @@ const char *make_absolute_path(const char *path)
 			len = readlink(buf, next_buf, PATH_MAX);
 			if (len < 0)
 				die ("Invalid symlink: %s", buf);
+			if (PATH_MAX <= len)
+				die("symbolic link too long: %s", buf);
 			next_buf[len] = '\0';
 			buf = next_buf;
 			buf_index = 1 - buf_index;
-- 
2.30.2