ALPINE-CVE-2022-28738 — Vulnetix

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ALPINE-CVE-2022-28738 PUBLISHED CVSS 9.800000190734863 CRITICAL

A double free was found in the Regexp compiler in Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2. If a victim attempts to create a Regexp from untrusted user input, an attacker may be able to write to unexpected memory locations.

Risk Scores

CVSS v3.1

9.800000190734863

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions
Alpine:v3.23	ruby	0, 0, 0
Alpine:v3.20	ruby	0, 0, 0
Alpine:v3.22	ruby	0, 0, 0
Alpine:v3.21	ruby	0, 0, 0
Alpine:v3.19	ruby	2.2.2-r0, 2.2.1-r0, 2.1.5-r1
Alpine:v3.15	ruby	0, 1.8.7_p160-r2, 1.8.7_p160-r3
Alpine:v3.16	ruby	2.3.1-r2, 2.3.2-r0, 2.3.3-r0
Alpine:v3.18	ruby	3.0.2-r0, 0, 1.8.7_p160-r2
Alpine:v3.17	ruby	0, 1.8.7_p160-r2, 1.8.7_p160-r3

Timeline

May 9, 2022 CVE Published
Dec 3, 2025 CVE Updated
Apr 30, 2026 Distribution Patch

References

https://security.alpinelinux.org/vuln/CVE-2022-28738 advisory

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