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SUSE Linux 15-SP7 Xen Important Security Update CVE-2026-42487

suse
Calendar Grey June 11, 2026
Dist Suse Esm H88
Install the important security update for xen to fix four vulnerabilities affecting SUSE Linux Enterprise systems.
An update that solves four vulnerabilities can now be installed.

Summary

## This update for xen fixes the following issues: * CVE-2026-42487: x86 HVM I/O port list traversal (bsc#1266952). * CVE-2026-42488: x86: mismatched mapcache metadata (bsc#1266955). * CVE-2026-42489,CVE-2026-42490: domctl lock open to abuse (bsc#1266953).

Topics%20covered

Topics Covered

security advisory denial of service SuSE important kernel issue xen

References

* bsc#1266952

* bsc#1266953

* bsc#1266955

Cross-

* CVE-2026-42487

* CVE-2026-42488

* CVE-2026-42489

* CVE-2026-42490

CVSS scores:

* CVE-2026-42487 ( SUSE ): 8.8

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

* CVE-2026-42487 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

* CVE-2026-42488 ( SUSE ): 8.7

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

* CVE-2026-42488 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

* CVE-2026-42489 ( SUSE ): 6.8

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

* CVE-2026-42489 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H

* CVE-2026-42490 ( SUSE ): 6.8

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2364-1
Release Date: 2026-06-11T06:54:28Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SuSE important kernel issue xen

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