[PATCH 0/3] Use new wrappers to copy userspace arrays

[Philipp Stanner]

Hi,

Linus recently merged [1] the wrapper functions memdup_array_user() and
vmemdup_array_user() in include/linux/string.h for Kernel v6.7

I am currently adding them to all places where (v)memdup_user() had been
used to copy arrays.

The wrapper is different to the wrapped functions only in that it might
return -EOVERFLOW. So this new error code might get pushed up to
userspace. I hope this is fine.

I felt that it might be a good idea to land those three patches here
with a single series, since they all touch something KVM-related.

Kind regards,
P.

[1] https://lore.kernel.org/all/169886743808.2396.17544791408117731525.pr-tracker-bot@xxxxxxxxxx/

Philipp Stanner (3):
  arch/x86/kvm: copy user-array with overflow-check
  arch/s390/kvm: copy userspace-array safely
  virt/kvm: copy userspace-array safely

 arch/s390/kvm/guestdbg.c | 4 ++--
 arch/x86/kvm/cpuid.c     | 4 ++--
 virt/kvm/kvm_main.c      | 5 ++---
 3 files changed, 6 insertions(+), 7 deletions(-)

-- 
2.41.0