Use-after-free vulnerability in hash_slice function in mruby 2.1.0

Use-after-free vulnerability in hash_slice function in mruby 2.1.0

CVE-2020-6840 · CRITICAL Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

In mruby 2.1.0, there is a use-after-free in hash_slice in mrbgems/mruby-hash-ext/src/hash-ext.c.

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