CVE-2019-20908 PUBLISHED

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.

EPSS 0.01% · 1.2th percentile

Risk Scores

EPSS Score
0.01%
1.2th percentile

Affected Products

VendorProductVersions
Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-azure-fips4.15.0-1002.2, 0
Ubuntu:18.04:LTSlinux-azure-5.35.3.0-1031.32~18.04.1, 5.3.0-1009.10~18.04.1, 5.3.0-1008.9~18.04.1
Ubuntu:18.04:LTSlinux-oracle-5.05.0.0-1014.19, 5.0.0-1010.15~18.04.1, 5.0.0-1009.14~18.04.1
Ubuntu:24.04:LTSlinux-raspi-realtime6.8.0-2019.20, 0
Ubuntu:18.04:LTSlinux-azure-4.154.15.0-1091.101, 0, 4.15.0-1083.93
Ubuntu:18.04:LTSlinux-gke-5.05.0.0-1032.33, 5.0.0-1029.30~18.04.1, 5.0.0-1027.28~18.04.1
Ubuntu:18.04:LTSlinux-raspi2-5.35.3.0-1017.19~18.04.1, 5.3.0-1028.30~18.04.2, 5.3.0-1027.29~18.04.1
Ubuntu:Pro:FIPS:18.04:LTSlinux-gcp-fips4.15.0-1001.1, 0
Ubuntu:20.04:LTSlinux-gke5.4.0-1044.46, 5.4.0-1099.106, 5.4.0-1098.105
Ubuntu:18.04:LTSlinux-azure-edge4.18.0-1006.6~18.04.1, 0, 4.18.0-1008.8~18.04.1
Ubuntu:18.04:LTSlinux-hwe-edge5.3.0-22.24~18.04.1, 5.3.0-23.25~18.04.1, 5.3.0-23.25~18.04.2
Ubuntu:18.04:LTSlinux-hwe5.0.0-37.40~18.04.1, 5.3.0-26.28~18.04.1, 5.3.0-28.30~18.04.1
Ubuntu:18.04:LTSlinux-azure4.15.0-1012.12, 5.0.0-1036.38, 5.0.0-1035.37
Ubuntu:Pro:14.04:LTSlinux-azure4.15.0-1030.31~14.04.1, 4.15.0-1039.41~14.04.2, 4.15.0-1037.39~14.04.2
Ubuntu:18.04:LTSlinux-aws-5.05.0.0-1021.24~18.04.1, 5.0.0-1022.25~18.04.1, 5.0.0-1023.26~18.04.1
Ubuntu:16.04:LTSlinux-oracle4.15.0-1010.12~16.04.1, 0, 4.15.0-1007.9~16.04.1
Ubuntu:18.04:LTSlinux0, 4.15.0-39.42, 4.15.0-38.41
Ubuntu:18.04:LTSlinux-aws-5.30, 5.3.0-1016.17~18.04.1, 5.3.0-1017.18~18.04.1
Ubuntu:18.04:LTSlinux-aws4.15.0-1065.69, 4.15.0-1066.70, 4.15.0-1067.71
Ubuntu:22.04:LTSlinux-intel-iot-realtime5.15.0-1073.75, 0

…and 26 more

Timeline

References

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