This page tracks the Alpine Linux fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-62430 →

ALPINE-CVE-2026-62430

Accesses to the CMOS memory contents are done using an indirect IO port pair. Therefore Xen needs to cache the guest chosen index, and one of the usa...

Original description

The description as published by the source.

Accesses to the CMOS memory contents are done using an indirect IO port
pair. Therefore Xen needs to cache the guest chosen index, and one of
the usages of the index didn't take the necessary locking to avoid
concurrent changes. As a result, a guest could change the index after
it being checked, causing a subsequent out-of-bound read access to the
contents of an array.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Alpine:v3.21 xen

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.19.6-r0"}]}]

Alpine:v3.22 xen

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4-r0"}]}]

Alpine:v3.23 xen

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4-r0"}]}]

Alpine:v3.24 xen

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.21.2-r0"}]}]

References

advisory security.alpinelinux.org