Description: ACPI: configfs: Disallow loading ACPI tables when locked down
References:
 https://git.zx2c4.com/american-unsigned-language/tree/american-unsigned-language-2.sh
 https://www.openwall.com/lists/oss-security/2020/06/15/3
 https://www.openwall.com/lists/oss-security/2020/07/30/2
Notes:
 carnil> We do not enable CONFIG_ACPI_CONFIGFS so this is not a problem
 carnil> for the images built.
Bugs:
upstream: released (5.8-rc3) [75b0cea7bf307f362057cc778efe89af4c615354]
4.19-upstream-stable:
4.9-upstream-stable:
sid: released (5.7.10-1)
4.19-buster-security:
4.9-stretch-security: