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Commit 27b7edcf authored by Namjae Jeon's avatar Namjae Jeon Committed by Steve French
Browse files

cifs: fix a possible null pointer deref in decode_ascii_ssetup 



When kzalloc fails, we will end up doing NULL pointer derefrence

Signed-off-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: default avatarAshish Sangwan <a.sangwan@samsung.com>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent 2bb93d24

fs/cifs/sess.c

+4 −3
Original line number Diff line number Diff line
@@ -243,10 +243,11 @@ static void decode_ascii_ssetup(char **pbcc_area, __u16 bleft, 
	kfree(ses->serverOS);



	ses->serverOS = kzalloc(len + 1, GFP_KERNEL);

	if (ses->serverOS)

	if (ses->serverOS) {

		strncpy(ses->serverOS, bcc_ptr, len);

		if (strncmp(ses->serverOS, "OS/2", 4) == 0)

			cifs_dbg(FYI, "OS/2 server\n");

	}



	bcc_ptr += len + 1;

	bleft -= len + 1;