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CVE-2019-20908

CVE-2019-20908

EPSS 0.5%
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.
Affected products
n/a · n/a

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References
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlhttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1957a85b0032a81e6482ca4aab883643b8dae06ehttps://git.zx2c4.com/american-unsigned-language/tree/american-unsigned-language.shhttps://mailarchives.bentasker.co.uk/Mirrors/OSSSec/2020/06-Jun/msg00035.htmlhttps://usn.ubuntu.com/4426-1/https://usn.ubuntu.com/4427-1/https://usn.ubuntu.com/4439-1/https://usn.ubuntu.com/4440-1/http://www.openwall.com/lists/oss-security/2020/07/20/6http://www.openwall.com/lists/oss-security/2020/07/29/3http://www.openwall.com/lists/oss-security/2020/07/30/2