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GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks after exit. This lead to a use-after-free condition, and could possibly lead to secure boot bypass.

🗓️ 03 Sep 2025 23:49:50Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 7 Views

Grub two fails to run module fini on exit, leaving uefi table hooks and possible secure boot bypass.

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03 Sep 2025 23:49Current
7High risk
Vulners AI Score7
CVSS 3.16.7
EPSS0.00378
SSVC
7