firmware: arm_scmi: Harden shared memory access in fetch_notification

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[ Upstream commit 9bae076cd4 ]

A misbheaving SCMI platform firmware could reply with out-of-spec
notifications, shorter than the mimimum size comprising a header.

Fixes: d5141f37c4 ("firmware: arm_scmi: Add notifications support in transport layer")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20221222183823.518856-4-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Cristian Marussi 2022-12-22 18:38:21 +00:00 • committed by Greg Kroah-Hartman

parent 3463203d10

commit d807aff191

1 changed files with 3 additions and 1 deletions

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drivers/firmware/arm_scmi/shmem.c

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