An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032. CREATE(Triage):(User=admin) [CVE-2019-20908|https://nvd.nist.gov/vuln/detail/CVE-2019-20908]
