CVE-2022-0481

NULL Pointer Dereference in mruby/mruby

5.5 MediumFix available

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.92%Unchanged since Feb 8, 2022

What each source reports

CVE List Score used 5.5

NULL Pointer Dereference in mruby/mruby

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Record: CVE-2022-0481
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

EUVDEUVD-2022-15619 5.5

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Record: EUVD-2022-15619
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-h8gw-f6pq-8cg5 No score

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Record: GHSA-h8gw-f6pq-8cg5
Weakness: CWE-476
Updated: 2026-11-02

NVD 7.5

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Record: CVE-2022-0481
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0: 7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness: CWE-476
Updated: 2026-11-02

OSVALPINE-CVE-2022-0481 7.5

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Record: ALPINE-CVE-2022-0481
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

OSV 5.5

NULL Pointer Dereference in mruby/mruby

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Record: CVE-2022-0481
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

OSVDEBIAN-CVE-2022-0481 7.5

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Record: DEBIAN-CVE-2022-0481
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

OSVUBUNTU-CVE-2022-0481 7.5

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Record: UBUNTU-CVE-2022-0481
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVopenSUSE-SU-2024:11834-1 No score

libmruby3-3.0.0-4.1 on GA media

These are all security issues fixed in the libmruby3-3.0.0-4.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:11834-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`mruby` Alpine:v3.17	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.18	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.19	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.20	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.21	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.22	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.23	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.24	before 3.1.0-r0	3.1.0-r0
`mruby` Debian:12	before 3.1.0-1	3.1.0-1
`mruby` Debian:13	before 3.1.0-1	3.1.0-1

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Affected packages
Package	Affected	Fixed
`mruby` Debian:14	before 3.1.0-1	3.1.0-1
`mruby` Ubuntu:16.04:LTS	All versions, plus listed versions 1.1.0+20150817+gita1731254-11.1.0+20150906+git1cbbb7e1-11.2.0+20160315+git4f20d58a-1	None known
`mruby` Ubuntu:18.04:LTS	All versions, plus listed versions 1.3.0-11.3.0+20170925+git38185028-11.3.0+20171029+git77edafb0-11.4.0-1	None known
`mruby` Ubuntu:20.04:LTS	All versions, plus listed versions 2.0.0-1	None known
`mruby` Ubuntu:22.04:LTS	All versions, plus listed versions 2.1.2-33.0.0-13.0.0-3	None known
`mruby` Ubuntu:24.04:LTS	All versions, plus listed versions 3.2.0-13.2.0-2	None known
`mruby` Ubuntu:25.10	All versions, plus listed versions 3.3.0-1	None known
`mruby` Ubuntu:26.10	All versions, plus listed versions 3.4.0-23.4.0-34.0.0-1	None known
`mruby` Ubuntu:26.04:LTS	All versions, plus listed versions 3.3.0-13.4.0-2	None known
`mruby` openSUSE:Tumbleweed	before 3.0.0-4.1	3.0.0-4.1

History

History
Recorded	Changed	Sources
Nov 3, 2026	affected, aliases, references	OSV
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-0481 is a medium vulnerability (CVSS 5.5) in Mruby, published February 4, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.92%, the 60th percentile. Fixed in mruby 3.1.0-r0.

References

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