[PATCH 0/5] Ensure the copied buf is NULL terminated

[Bui Quang Minh]

Hi everyone,

I found that some drivers contains an out-of-bound read pattern like this

	kern_buf = memdup_user(user_buf, count);
	...
	sscanf(kern_buf, ...);

The sscanf can be replaced by some other string-related functions. This
pattern can lead to out-of-bound read of kern_buf in string-related
functions.

This series fix the above issue by replacing memdup_user with
memdup_user_nul or allocating count + 1 buffer then writing the NULL
terminator to end of buffer after userspace copying.

Thanks,
Quang Minh.

Signed-off-by: Bui Quang Minh <minhquangbui99@xxxxxxxxx>
---
Bui Quang Minh (5):
      drivers/net/ethernet/intel-ice: ensure the copied buf is NULL terminated
      drivers/net/brocade-bnad: ensure the copied buf is NULL terminated
      drivers/scsi/bfa/bfad: ensure the copied buf is NULL terminated
      drivers/scsi/qedf: ensure the copied buf is NULL terminated
      drivers/s390/cio: ensure the copied buf is NULL terminated

 drivers/net/ethernet/brocade/bna/bnad_debugfs.c | 4 ++--
 drivers/net/ethernet/intel/ice/ice_debugfs.c    | 8 ++++----
 drivers/s390/cio/cio_inject.c                   | 3 ++-
 drivers/scsi/bfa/bfad_debugfs.c                 | 4 ++--
 drivers/scsi/qedf/qedf_debugfs.c                | 2 +-
 5 files changed, 11 insertions(+), 10 deletions(-)
---
base-commit: ed30a4a51bb196781c8058073ea720133a65596f
change-id: 20240422-fix-oob-read-19ae7f8f3711

Best regards,
-- 
Bui Quang Minh <minhquangbui99@xxxxxxxxx>