Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:  smb: client: reject userspace cifs.spnego descriptions  cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcall_target that cifs.upcall treats as kernel-originating inputs. However, userspace can also create keys of this type through request_key(2) or add_key(2), allowing those fields to be supplied without CIFS origin.  Only accept cifs.spnego descriptions while CIFS is using its private spnego_cred to request the key.