cfi_flash: Bound-check index before array access
authorMario Six <mario.six@gdsys.cc>
Fri, 26 Jan 2018 13:43:53 +0000 (14:43 +0100)
committerStefan Roese <sr@denx.de>
Mon, 29 Jan 2018 06:48:59 +0000 (07:48 +0100)
commit5701ba82894d679eb42df5d0b93a2d44b3df695d
treef9da3e31926758b9b6416388077a31fd56615212
parent9dbaebcf9f401c5dcea762e34a3dc8ed10760623
cfi_flash: Bound-check index before array access

In a while loop in cfi_flash.c the array "start" is accessed at the index
"sector" before the index variable "sector" is bounds-checked, which
might lead to accesses beyond the bounds of the array.

Swap the order of the checks in the "&&" expression, so that the
short-circuit evaluation prevents out-of-bounds array accesses.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.de>
drivers/mtd/cfi_flash.c