diff options
| author | Steve French <smfrench@gmail.com> | 2014-08-17 09:22:24 +0400 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2014-08-17 09:41:02 +0400 |
| commit | 18f39e7be0121317550d03e267e3ebd4dbfbb3ce (patch) | |
| tree | e8c90a98d73dcd9e08a844cb7f05a9e3b823c766 | |
| parent | 754789a1c046106cfdb067102642f73e0fd35fb3 (diff) | |
| download | linux-18f39e7be0121317550d03e267e3ebd4dbfbb3ce.tar.xz | |
[CIFS] Possible null ptr deref in SMB2_tcon
As Raphael Geissert pointed out, tcon_error_exit can dereference tcon
and there is one path in which tcon can be null.
Signed-off-by: Steve French <smfrench@gmail.com>
CC: Stable <stable@vger.kernel.org> # v3.7+
Reported-by: Raphael Geissert <geissert@debian.org>
| -rw-r--r-- | fs/cifs/smb2pdu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 74440af59f35..240c627bc0c6 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -907,7 +907,8 @@ tcon_exit: tcon_error_exit: if (rsp->hdr.Status == STATUS_BAD_NETWORK_NAME) { cifs_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree); - tcon->bad_network_name = true; + if (tcon) + tcon->bad_network_name = true; } goto tcon_exit; } |