DescriptionMultiple integer overflows in the Pre-EFI Initialization (PEI) boot phase in the Capsule Update feature in the UEFI implementation in EDK2 allow physically proximate attackers to bypass intended access restrictions by providing crafted data that is not properly handled during the coalescing phase.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
edk2 (PTS)stretch0~20161202.7bbe0b3e-1+deb9u1vulnerable
stretch (security)0~20161202.7bbe0b3e-1+deb9u2vulnerable
bookworm, sid2021.08-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
edk2source(unstable)(not affected)


- edk2 <not-affected> (No support for updates of hypervisor-supplied firmware from guests)

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