[linux-cifs-client] [PATCH 2/2] cifs: Increase size of tmp_buf in cifs_readdir to avoid potential overflows

[Suresh Jayaraman]

Increase size of tmp_buf to possible maximum to avoid potential
overflows.


Pointed-out-by: Jeff Layton <jlayton at redhat.com>
Signed-off-by: Suresh Jayaraman <sjayaraman at suse.de>
---
 fs/cifs/readdir.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 1a8be62..ebd0da7 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -1074,7 +1074,7 @@ int cifs_readdir(struct file *file, void *direntry, filldir_t filldir)
 		with the rare long characters alloc more to account for
 		such multibyte target UTF-8 characters. cifs_unicode.c,
 		which actually does the conversion, has the same limit */
-		tmp_buf = kmalloc((2 * NAME_MAX) + 4, GFP_KERNEL);
+		tmp_buf = kmalloc((4 * NAME_MAX) + 2, GFP_KERNEL);
 		for (i = 0; (i < num_to_fill) && (rc == 0); i++) {
 			if (current_entry == NULL) {
 				/* evaluate whether this case is an error */