Eric Biggers <ebiggers3@xxxxxxxxx> wrote: > > > - if (_payload) { > > > + if (plen) { > > > > "if (_payload && plen)" would be better. > > > > David > > No, that doesn't solve the problem. The problem is that userspace can pass > in a NULL payload with nonzero length, causing the kernel to dereference a > NULL pointer for some key types. For example: Okay, in that case, I think there should be an else-statement that clears plen if !_payload. David