CIFS: Fix a possible memory corruption in push locks
commit e3d240e9d5
upstream.
If maxBuf is not 0 but less than a size of SMB2 lock structure
we can end up with a memory corruption.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
9f9d98246e
commit
c954acc000
|
@ -260,7 +260,7 @@ smb2_push_mandatory_locks(struct cifsFileInfo *cfile)
|
|||
* and check it for zero before using.
|
||||
*/
|
||||
max_buf = tlink_tcon(cfile->tlink)->ses->server->maxBuf;
|
||||
if (!max_buf) {
|
||||
if (max_buf < sizeof(struct smb2_lock_element)) {
|
||||
free_xid(xid);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue