# CVE-2021-46020: mruby: An untrusted pointer dereference in mrb_vm_exec() of mruby v3.0.0 can lead to a segmentation fault or application crash.

CVE-2021-46020 is fixed in mruby on 1 platform, first by DEBIAN-CVE-2021-46020, released January 14, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-46020
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0108
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 14, 2022

## Description

An untrusted pointer dereference in mrb_vm_exec() of mruby v3.0.0 can lead to a segmentation fault or application crash.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | mruby Debian 12.15 (bookworm) | 3.1.0-1 | [DEBIAN-CVE-2021-46020](https://patchblox.com/security/data/fix/linux/debian-cve-2021-46020.md) | Jan 14, 2022 |
| Linux | mruby Debian 13.5 (trixie) | 3.1.0-1 | [DEBIAN-CVE-2021-46020](https://patchblox.com/security/data/fix/linux/debian-cve-2021-46020.md) | Jan 14, 2022 |
| Linux | mruby Debian 14 | 3.1.0-1 | [DEBIAN-CVE-2021-46020](https://patchblox.com/security/data/fix/linux/debian-cve-2021-46020.md) | Jan 14, 2022 |

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