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SUSE-SU-2026:1743-1 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceSUSE-SU-2026:1743-1

SUSE-SU-2026:1743-1

HIGH7.8

Security update for xen

Published May 7, 2026

Modified 4 weeks ago

Fix available

Details

Description of the patch:

This update for xen fixes the following issues:

Update to Xen 4.20.3 bug fix release (bsc#1027519) (jsc#PED-8907).
CVE-2025-54505: Floating Point Divider State Sampling on AMD CPUs AMD-SN-7053 (bsc#1262428).
CVE-2026-23557: Xenstored DoS via XS_RESET_WATCHES command (bsc#1262178).
CVE-2026-23558: grant table v2 race in status page mapping (bsc#1262180).

Affected Packages

xen-libs

SUSE Linux Enterprise Module for Basesystem 15 SP7

Fixed in:

4.20.3_02-150700.3.33.1

xen-tools-domU

SUSE Linux Enterprise Module for Basesystem 15 SP7

Fixed in:

4.20.3_02-150700.3.33.1

xen

SUSE Linux Enterprise Module for Server Applications 15 SP7

Fixed in:

4.20.3_02-150700.3.33.1

xen-devel

SUSE Linux Enterprise Module for Server Applications 15 SP7

Fixed in:

4.20.3_02-150700.3.33.1

xen-tools

SUSE Linux Enterprise Module for Server Applications 15 SP7

Fixed in:

4.20.3_02-150700.3.33.1

xen-tools-xendomains-wait-disk

SUSE Linux Enterprise Module for Server Applications 15 SP7

Fixed in:

4.20.3_02-150700.3.33.1

References

https://bugzilla.suse.com/1027519

https://bugzilla.suse.com/1262178

https://bugzilla.suse.com/1262180

https://bugzilla.suse.com/1262428

https://lists.suse.com/pipermail/sle-updates/2026-May/046298.html

https://www.suse.com/security/cve/CVE-2025-54505/

https://www.suse.com/security/cve/CVE-2026-23557/

https://www.suse.com/security/cve/CVE-2026-23558/

https://www.suse.com/support/security/rating/

https://www.suse.com/support/update/announcement/2026/suse-su-20261743-1/

CVSS Analysis

CVSS v3.1

7.8

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

HighAC:H

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

Scope

ChangedS:C

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

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

Upstream

CVE-2025-54505 CVE-2026-23557 CVE-2026-23558

Ecosystems

SUSE Linux Enterprise Module for Basesystem 15 SP7 SUSE Linux Enterprise Module for Server Applications 15 SP7

Timeline

PublishedMay 7, 2026

ModifiedMay 7, 2026