PT-2026-35872 · Xen+4 · Xen

Claude Opus · Published 2026-04-28 · Updated 2026-05-19 · CVE-2026-23558

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions xen (affected versions not specified)

Description Security issues were identified and addressed in the xen-4.21.1 04-1.1 package on the GA media of openSUSE Tumbleweed.

Recommendations Update to the xen-4.21.1 04-1.1 package.

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2026-23558

OPENSUSE-SU-2026:10660-1

Affected Products

Xen

References · 17

• https://osv.dev/vulnerability/ALPINE-CVE-2026-23558 · Vendor Advisory
• http://openwall.com/lists/oss-security/2026/04/28/13 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23558 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-23558 · Security Note
• https://xenbits.xenproject.org/xsa/advisory-486.html · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10660-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23558 · Vendor Advisory
• http://xenbits.xen.org/xsa/advisory-486.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23558 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23558 · Security Note
• https://ubuntu.com/security/CVE-2026-23558 · Vendor Advisory
• https://twitter.com/oss_security/status/2049316729084424657 · Twitter Post
• https://suse.com/security/cve/CVE-2026-23558 · Note
• https://xenbits.xen.org/xsa/advisory-486.html · Note
• https://suse.com/security/cve/CVE-2026-23557 · Note