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kernel: lockdown: bypass through ACPI write via efivar_ssdt

🗓️ 29 Jul 2020 18:31:29Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

ACPI table loading via EFI variable and extensible firmware interface variable lets root bypass kernel lockdown.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8x86_64kernel-rt0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-core0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-core-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-debug-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-core0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-debug-core-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-debuginfo0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-debug-debuginfo-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-devel0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-debug-devel-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-kvm0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-debug-kvm-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-modules0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-debug-modules-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-modules-extra0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-debug-modules-extra-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debuginfo0:4.18.0-193.14.3.rt13.67.el8_2kernel-rt-debuginfo-0:4.18.0-193.14.3.rt13.67.el8_2.x86_64.rpm
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