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CVE-2022-0631

Heap-based Buffer Overflow in mruby/mruby

5.9 MediumFix available

Heap-based Buffer Overflow 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
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
Low

Exploit likelihood

0.92%Unchanged since Feb 19, 2022
90%50%10%1%

What each source reports

CVE List Score used 5.9

Heap-based Buffer Overflow in mruby/mruby

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Record
CVE-2022-0631
CVSS 3.0
5.9 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-122
Updated
2026-11-02
EUVDEUVD-2022-15728 5.9

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Record
EUVD-2022-15728
CVSS 3.0
5.9 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-hv83-f8w5-chhv No score

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Record
GHSA-hv83-f8w5-chhv
Weakness
CWE-122
Updated
2026-11-02
NVD 9.8

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Record
CVE-2022-0631
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0
5.9 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-122
Updated
2026-11-02
OSVALPINE-CVE-2022-0631 9.8

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Record
ALPINE-CVE-2022-0631
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSV 5.9

Heap-based Buffer Overflow in mruby/mruby

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Record
CVE-2022-0631
CVSS 3.0
5.9 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-122
Updated
2026-11-02
OSVUBUNTU-CVE-2022-0631 9.8

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Record
UBUNTU-CVE-2022-0631
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0
5.9 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
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
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
Show 6 moreShow less
Affected packages
PackageAffectedFixed
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

History

History
RecordedChangedSources
affected, aliases, facts, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2022-0631 is a medium vulnerability (CVSS 5.9) in Mruby, published February 18, 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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