High severity7.5NVD Advisory· Published Mar 3, 2021· Updated Jun 17, 2026
CVE-2020-14372
CVE-2020-14372
Description
A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable content directly into memory. The table is further loaded and executed by the kernel, defeating its Secure Boot lockdown and allowing the attacker to load unsigned code. The highest threat from this vulnerability is to data confidentiality and integrity, as well as system availability.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
40- grub2/grub2description
- osv-coords38 versionspkg:rpm/almalinux/shim-aa64pkg:rpm/almalinux/shim-ia32pkg:rpm/almalinux/shim-unsigned-aarch64pkg:rpm/almalinux/shim-unsigned-x64pkg:rpm/almalinux/shim-x64pkg:rpm/opensuse/grub2&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/grub2&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/grub2&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/grub2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/grub2&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/grub2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 15.4-2.el8_1.alma+ 37 more
- (no CPE)range: < 15.4-2.el8_1.alma
- (no CPE)range: < 15.4-2.el8_1.alma
- (no CPE)range: < 15-7.el8_1.alma
- (no CPE)range: < 15.4-4.el8_1.alma
- (no CPE)range: < 15.4-2.el8_1.alma
- (no CPE)range: < 2.04-lp152.7.22.7
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-19.66.1
- (no CPE)range: < 2.02-19.66.1
- (no CPE)range: < 2.04-9.34.1
- (no CPE)range: < 2.04-9.34.1
- (no CPE)range: < 2.02-0.66.26.1
- (no CPE)range: < 2.02-115.59.1
- (no CPE)range: < 2.02-115.59.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-19.66.1
- (no CPE)range: < 2.02-115.59.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-19.66.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-26.43.1
- (no CPE)range: < 2.02-115.59.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-12.47.1
- (no CPE)range: < 2.02-4.69.1
- (no CPE)range: < 2.02-12.47.1
Patches
Vulnerability mechanics
References
5- access.redhat.com/security/vulnerabilities/RHSB-2021-003nvdPatchThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- security.gentoo.org/glsa/202104-05nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20210416-0004/nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/nvd
News mentions
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