[PATCH 0/2] nfc: pn533: bound device-supplied lengths in the receive path

[Michael Bommarito]

The PN533 receive path trusts several device-supplied length fields and
reads past the received buffer when they exceed it. The receive skb is
sized to the device's USB transfer length, so a malicious or counterfeit
PN53x reader triggers out-of-bounds reads in the standard/ACR122 frame
validators, in Type A target parsing (nfcid_len), and in the autopoll
record walk.

Michael Bommarito (2):
  nfc: pn533: bound device-supplied lengths in the receive path
  nfc: pn533: add KUnit tests for receive-path bounds

 drivers/nfc/pn533/Kconfig |   9 +++
 drivers/nfc/pn533/pn533.c | 125 +++++++++++++++++++++++++++++++++++++-
 drivers/nfc/pn533/pn533.h |   3 +-
 drivers/nfc/pn533/usb.c   |  12 +++-
 4 files changed, 144 insertions(+), 5 deletions(-)

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2.53.0