CVE-2020-25668

NameCVE-2020-25668
DescriptionA flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.
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)
ReferencesDLA-2483-1, DLA-2494-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1vulnerable
stretch (security)4.9.272-1fixed
buster4.19.194-1fixed
buster (security)4.19.171-2fixed
bullseye, sid5.10.40-1fixed
linux-4.19 (PTS)stretch (security)4.19.194-1~deb9u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch4.9.246-1DLA-2494-1
linuxsourcebuster4.19.160-1
linuxsource(unstable)5.9.6-1
linux-4.19sourcestretch4.19.160-2~deb9u1DLA-2483-1

Notes

https://www.openwall.com/lists/oss-security/2020/10/30/1
https://git.kernel.org/linus/90bfdeef83f1d6c696039b6a917190dcbbad3220

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