Vulnerability · Published Jan 14, 2022 · Assigned by mitre
CVE-2021-46020
High 7.5
In plain English
A high-severity security flaw in the mruby package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.0%top 35.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An untrusted pointer dereference in mrb_vm_exec() of mruby v3.0.0 can lead to a segmentation fault or application crash.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mruby | 3.1.0-1 | DEBIAN-CVE-2021-46020 |
| Debian:13 | mruby | 3.1.0-1 | DEBIAN-CVE-2021-46020 |
| Debian:14 | mruby | 3.1.0-1 | DEBIAN-CVE-2021-46020 |
| Ubuntu:22.04:LTS | mruby | no fix listed | UBUNTU-CVE-2021-46020 |
| Ubuntu:24.04:LTS | mruby | no fix listed | UBUNTU-CVE-2021-46020 |
| Ubuntu:25.10 | mruby | no fix listed | UBUNTU-CVE-2021-46020 |
| Ubuntu:26.04:LTS | mruby | no fix listed | UBUNTU-CVE-2021-46020 |
| Ubuntu:26.10 | mruby | no fix listed | UBUNTU-CVE-2021-46020 |
Affected products (as reported)
References
- https://github.com/mruby/mruby/issues/5613 x_refsource_MISC