4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nicholas Mc Guire <hofrat@xxxxxxxxx>
commit 126c97f4d0d1b5b956e8b0740c81a2b2a2ae548c upstream.
The kmalloc was not being checked - if it fails issue a warning
and return -ENOMEM to the caller.
Signed-off-by: Nicholas Mc Guire <hofrat@xxxxxxxxx>
Fixes: b8da344b74c8 ("cifs: dynamic allocation of ntlmssp blob")
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Reviewed-by: Pavel Shilovsky <pshilov@xxxxxxxxxxxxx>
cc: Stable <stable@xxxxxxxxxxxxxxx>`
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/cifs/sess.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -398,6 +398,12 @@ int build_ntlmssp_auth_blob(unsigned cha
goto setup_ntlmv2_ret;
}
*pbuffer = kmalloc(size_of_ntlmssp_blob(ses), GFP_KERNEL);
+ if (!*pbuffer) {
+ rc = -ENOMEM;
+ cifs_dbg(VFS, "Error %d during NTLMSSP allocation\n", rc);
+ *buflen = 0;
+ goto setup_ntlmv2_ret;
+ }
sec_blob = (AUTHENTICATE_MESSAGE *)*pbuffer;
memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8);
