This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-79590 →

DEBIAN-CVE-2026-79590

A NULL pointer dereference vulnerability exists in the Prism parser component of mruby 4.0.0. An attacker can provide a specially crafted Ruby source...

Original description

The description as published by the source.

A NULL pointer dereference vulnerability exists in the Prism parser component of mruby 4.0.0. An attacker can provide a specially crafted Ruby source file that triggers the parser to pass a NULL pointer to nonnull string handling functions, resulting in undefined behavior and application crash.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 mruby

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 mruby

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 mruby

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org