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BootHole is a buffer-overflow vulnerability in GNU GRUB2 versions prior to 2.06. GRUB2 improperly parses attacker-controlled content in its configuration file, permitting a crafted string to overflow a buffer and execute attacker-controlled code in the GRUB environment. Secure Boot validates the signed GRUB2 executable but, in affected configurations, does not validate the configuration-file content, allowing the flaw to be triggered after GRUB2 signature verification and before the operating system kernel is loaded.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The BootHole vulnerability in GRUB 2, referenced here as a prior example of Secure Boot revocation scale and pressure on dbx capacity.
A GRUB2 buffer overflow in grub.cfg parsing that can lead to arbitrary code execution during boot after Secure Boot validation, undermining the boot trust chain.
A Secure Boot-related vulnerability/event cited as an example of large-scale dbx revocations consuming limited revocation storage.
A vulnerability referenced only in connection with kernel dual-signing infrastructure; the advisory does not provide vulnerability details or state that this update directly fixes it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.