ASoC: max98390: Fix potential crash during param fw loading

Browse source

malformed firmware file can cause out-of-bound access and crash
 during dsm_param bin loading.
  - add MIN/MAX param size to avoid out-of-bound access.
  - read start addr and size of param and check bound.
  - add condition that fw->size > param_size + _PAYLOAD_OFFSET
    to confirm enough data.

Signed-off-by: Steve Lee <steves.lee@maximintegrated.com>
Link: https://lore.kernel.org/r/20200604054731.21140-1-steves.lee@maximintegrated.com
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Steve Lee 2020-06-04 14:47:31 +09:00 • committed by Mark Brown

parent 678916ec54

commit 97ed3e509e

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

2 changed files with 22 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

24

sound/soc/codecs/max98390.c

View file

3

sound/soc/codecs/max98390.h

View file