CVE-2020-6838

NameCVE-2020-6838
DescriptionIn mruby 2.1.0, there is a use-after-free in hash_values_at in mrbgems/mruby-hash-ext/src/hash-ext.c.
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
mruby (PTS)jessie1.0.0+20141015+gitb4cc962c-1fixed
stretch1.2.0+20161228+git30d5424a-1fixed
bullseye, sid, buster2.0.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mrubysource(unstable)(not affected)

Notes

- mruby <not-affected> (Vulnerable code not present)
Introduced by: https://github.com/mruby/mruby/commit/694089fafe4eae36c379a3d918d540eb0c4b8661
https://github.com/mruby/mruby/issues/4926
https://github.com/mruby/mruby/commit/fc8fb41451b07b3fda0726ba80e88e509ad02452
https://github.com/mruby/mruby/commit/70e574689664c10ed2c47581999cc2ce3e3c5afb
https://github.com/mruby/mruby/commit/2742ded32fe18f88833d76b297f5c2170b6880c3

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