CVE-2020-14308

NameCVE-2020-14308
DescriptionIn grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-4735-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
grub2 (PTS)jessie, jessie (lts)2.02~beta2-22+deb8u2vulnerable
stretch (lts), stretch2.02~beta3-5+deb9u3vulnerable
buster (security), buster, buster (lts)2.06-3~deb10u4fixed
bullseye (security), bullseye2.06-3~deb11u6fixed
bookworm (security), bookworm2.06-13+deb12u1fixed
sid, trixie2.12-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
grub2sourcebuster2.02+dfsg1-20+deb10u1DSA-4735-1
grub2source(unstable)2.04-9

Notes

[stretch] - grub2 <ignored> (No SecureBoot support in stretch)
https://www.openwall.com/lists/oss-security/2020/07/29/3
https://git.savannah.gnu.org/gitweb/?p=grub.git;a=commit;h=f725fa7cb2ece547c5af01eeeecfe8d95802ed41
[jessie] - grub2 <ignored> (No SecureBoot support in jessie)

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