From: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Date: Wed, 28 Jul 2021 01:56:48 +0000 (+0800)
Subject: lsattr: check whether path is NULL in lsattr_dir_proc()
X-Git-Tag: v1.46.4~45
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=c8e9e0135b3eb0d8a18387d58645e7cc1062da58;p=tools%2Fe2fsprogs.git

lsattr: check whether path is NULL in lsattr_dir_proc()

In lsattr_dir_proc(), if malloc() return NULL, it will cause
a segmentation fault problem.

Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Signed-off-by: Wu Guanghao <wuguanghao3@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/misc/lsattr.c b/misc/lsattr.c
index 0d95437..55080e9 100644
--- a/misc/lsattr.c
+++ b/misc/lsattr.c
@@ -144,6 +144,11 @@ static int lsattr_dir_proc (const char * dir_name, struct dirent * de,
 	int dir_len = strlen(dir_name);
 
 	path = malloc(dir_len + strlen (de->d_name) + 2);
+	if (!path) {
+		fputs(_("Couldn't allocate path variable in lsattr_dir_proc\n"),
+			stderr);
+		return -1;
+	}
 
 	if (dir_len && dir_name[dir_len-1] == '/')
 		sprintf (path, "%s%s", dir_name, de->d_name);