firmware: dmi: Stop decoding on broken entry

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[ Upstream commit 0ef11f6045 ]

If a DMI table entry is shorter than 4 bytes, it is invalid. Due to
how DMI table parsing works, it is impossible to safely recover from
such an error, so we have to stop decoding the table.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Link: https://lore.kernel.org/linux-kernel/Zh2K3-HLXOesT_vZ@liuwe-devbox-debian-v2/T/
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jean Delvare 2024-04-30 18:29:32 +02:00 • committed by Greg Kroah-Hartman

parent 21e8f5b88a

commit 292edf27c1

1 changed files with 11 additions and 0 deletions

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drivers/firmware/dmi_scan.c

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