HighFix available
grub — security advisory
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.
- Products
- grub
- Affected versions
- Not specified
- Fixed versions
- 2.06-r0
- CVEs
- CVE-2020-14372
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:02 UTC · Revision 1
Source evidence
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.
osv:ALPINE-CVE-2020-14372
grub
Fixed versions: 2.06-r0
grub
Fixed versions: 2.06-r0
grub
Fixed versions: 2.06-r0
grub
Fixed versions: 2.06-r0
grub
Fixed versions: 2.06-r0
grub
Fixed versions: 2.06-r0
grub
Fixed versions: 2.06-r0
grub
Fixed versions: 2.06-r0
Complete source record
{
"id": "5616ff9692fa4ecb3766d0d66d94c09bab91b13e9747c7993c7580102dbd505c",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-14372",
"method": "structured",
"payload": {
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"title": "ALPINE-CVE-2020-14372",
"summary": "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.",
"evidence": "osv:ALPINE-CVE-2020-14372",
"products": [
{
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},
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"evidence": "/affected/0/ranges"
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{
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"severity": "high",
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"aliases": [
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"metrics": [
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"type": "CVSS_V3",
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"package": {
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"ecosystem": "Alpine:v3.17"
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"database_specific": {
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"package": {
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"package": {
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"ecosystem": "Alpine:v3.23"
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"package": {
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"ecosystem": "Alpine:v3.24"
},
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},
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}
],
"modified": "2026-10-26T11:17:55.125433824Z",
"provider": "osv",
"upstream": [
"CVE-2020-14372"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2020-14372"
]
},
"related_cves": [
{
"value": "CVE-2020-14372",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450418,
"published_at": "2021-03-03T17:15:11.583+00:00"
}