From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Steve French <sfrench@samba.org>, Ronnie Sahlberg <lsahlber@redhat.com>
Cc: linux-cifs@vger.kernel.org, samba-technical@lists.samba.org,
linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH] smb2: fix uninitialized variable bug in smb2_ioctl_query_info
Date: Tue, 9 Oct 2018 22:07:19 +0200 [thread overview]
Message-ID: <20181009200719.GA19561@embeddedor.com> (raw)
There is a potential execution path in which variable *resp_buftype*
is passed as an argument to function free_rsp_buf(), in which is used
without being properly initialized previously.
Fix this by initializing variable *resp_buftype* to -1 in order to
avoid unpredictable or unintended results.
Addresses-Coverity-ID: 1472116 ("Uninitialized scalar variable")
Fixes: 1473971 ("Uninitialized scalar variable")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
fs/cifs/smb2ops.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index c6c6450d..927aadd 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1133,7 +1133,7 @@ smb2_ioctl_query_info(const unsigned int xid,
struct smb_rqst rqst;
struct kvec iov[1];
struct kvec rsp_iov;
- int resp_buftype;
+ int resp_buftype = -1;
struct smb2_query_info_rsp *rsp = NULL;
void *buffer;
--
2.7.4
next reply other threads:[~2018-10-09 20:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-09 20:07 Gustavo A. R. Silva [this message]
2018-10-09 20:11 ` [PATCH] smb2: fix uninitialized variable bug in smb2_ioctl_query_info Gustavo A. R. Silva
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181009200719.GA19561@embeddedor.com \
--to=gustavo@embeddedor.com \
--cc=linux-cifs@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lsahlber@redhat.com \
--cc=samba-technical@lists.samba.org \
--cc=sfrench@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).