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Vulnerability record · public intelligence
CVE-2020-14308
UNKNOWN

CVE-2020-14308

Published Jul 29, 2020 · Updated Nov 3, 2026

Severity · CVSSUNKNOWN · Not scored
Known exploitationNot listed
EPSS / likelihood0.43%
QFinch risk scoreNot available

Original summary

Normalized public record · Updated Nov 3, 2026

In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

FIRST-EPSSCVE-LIST-V5
SSVC priority
LOW
Confidence
Not available
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. bugzilla.redhat.com ↗
  2. [oss-security] 20200729 multiple secure boot grub2 and linux kernel vulnerabilities ↗
  3. security.netapp.com ↗
  4. USN-4432-1 ↗
  5. openSUSE-SU-2020:1169 ↗
  6. openSUSE-SU-2020:1168 ↗
  7. GLSA-202104-05 ↗
  8. [oss-security] 20210916 Containers-optimized OS (COS) membership in the linux-distros list ↗
  9. [oss-security] 20210917 Re: Containers-optimized OS (COS) membership in the linux-distros list ↗
  10. [oss-security] 20210920 Re: Containers-optimized OS (COS) membership in the linux-distros list ↗

Record history

Published Jul 29, 2020 · Last refreshed Nov 3, 2026

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