diff options
| author | Chen Gang <gang.chen@asianux.com> | 2013-07-19 09:01:36 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-14 22:59:09 -0700 |
| commit | 4350018a57c333907db092beeb9fa65a82a258ed (patch) | |
| tree | 3a6671fea1d80ced3c3e20072a77c364a7ce29cf /fs/cifs/cifsencrypt.c | |
| parent | 72766b0bec55b104c414a22f2e8ecdbb6bb1e19e (diff) | |
cifs: extend the buffer length enought for sprintf() using
commit 057d6332b24a4497c55a761c83c823eed9e3f23b upstream.
For cifs_set_cifscreds() in "fs/cifs/connect.c", 'desc' buffer length
is 'CIFSCREDS_DESC_SIZE' (56 is less than 256), and 'ses->domainName'
length may be "255 + '\0'".
The related sprintf() may cause memory overflow, so need extend related
buffer enough to hold all things.
It is also necessary to be sure of 'ses->domainName' must be less than
256, and define the related macro instead of hard code number '256'.
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Scott Lovenberg <scott.lovenberg@gmail.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/cifs/cifsencrypt.c')
| -rw-r--r-- | fs/cifs/cifsencrypt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index f59d0d58258e..5c807b23ca67 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -389,7 +389,7 @@ find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp) if (blobptr + attrsize > blobend) break; if (type == NTLMSSP_AV_NB_DOMAIN_NAME) { - if (!attrsize) + if (!attrsize || attrsize >= CIFS_MAX_DOMAINNAME_LEN) break; if (!ses->domainName) { ses->domainName = |