Deepak Gupta fbb5fe811d lib: sbi: expected trap must always clear MPRV ...

Expected trap must always clear MPRV. Currently it doesn't. There is a
security issue here where if firmware was doing ld/st with MPRV=1 and
since there would be a expected trap, opensbi will continue to run as
MPRV=1. Security impact is DoS where opensbi will just keep trapping.

Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20251124220339.3695940-1-debug@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>

2025-12-26 16:22:09 +05:30

1.6 KiB

Raw Blame History

View Raw