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Description

The Ubuntu edk2 UEFI firmware packages accidentally allowed the UEFI Shell to be accessed in Secure Boot environments, possibly allowing bypass of Secure Boot constraints. Versions 2024.05-2ubuntu0.3 and 2024.02-2ubuntu0.3 disable the Shell. Some previous versions inserted a secure-boot-based decision to continue running inside the Shell itself, which is believed to be sufficient to enforce Secure Boot restrictions. This is an additional repair on top of the incomplete fix for CVE-2023-48733.

PUBLISHED Reserved 2025-03-18 | Published 2025-11-26 | Updated 2025-11-26 | Assigner canonical




LOW: 3.7CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:U

Problem types

CWE-489: Active Debug Code

Product status

Default status
unaffected

2024.05 (dpkg) before 2024.05-2ubuntu0.3
affected

2024.02 (dpkg) before 2024.02-2ubuntu0.3
affected

Credits

Dann Frazier finder

References

bugs.launchpad.net/ubuntu/+source/edk2/+bug/2101797

cve.org (CVE-2025-2486)

nvd.nist.gov (CVE-2025-2486)

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