Answer in brief
CVE-2024-45781 records a Medium severity (CVSS 6.7) vulnerability in Grub2: fs/ufs: oob write in the heap. The current sources do not mark it as known exploited. The current feed maps grub2 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic), Red Hat/rhcos (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps grub2 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic), Red Hat/rhcos (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| grub2generic | >=0 <=2.12 | Not reported |
| Red Hat/openshift/ose-rhel-coreos-9generic | * | Not reported |
| Red Hat/rhcosgeneric | * | Not reported |
Published upstream
Feb 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
A flaw was found in grub2. When reading a symbolic link's name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent secure boot protections.
Quoted source text, attributed separately from HOL analysis.