[PATCH v2 0/3] Megasas: fix OOB access and NULL dereference issues

[P J P]

From: Prasad J Pandit <address@hidden>

 Hello,

* First patch fixes an OOB access issue which may occur when a guest user
  sets 'reply_queue_head' field to a negative or large positive value,
  via 'struct mfi_init_qinfo' object in megasas_init_firmware(), such that
  'index' variables in megasas_lookup_frame() goes beyond the
  s->frames[MEGASAS_MAX_FRAMES=2048] array bounds.
  -> https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg03131.html

* Second patch fixes a NULL pointer dereference issue which may occur
  if megasas_enqueue_frame() routine returns a NULL frame for a given
  'frame_addr' address.
  -> https://bugs.launchpad.net/qemu/+bug/1878259

* Third patch updates other numeric fields of MegasasState to unsigned type.

Thank you.
--
Prasad J Pandit (3):
  megasas: use unsigned type for reply_queue_head and check index
  megasas: avoid NULL pointer dereference
  megasas: use unsigned type for positive numeric fields

 hw/scsi/megasas.c | 44 ++++++++++++++++++++++----------------------
 1 file changed, 22 insertions(+), 22 deletions(-)

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2.25.4