SUSE-SU-2026:5140-1: Security update for xen

Published Nov 9, 2026
·
Updated

This update for xen fixes the following issues:

Security issues fixed:

- CVE-2026-62437: x86: DMs may cause mem leak by IRQ binding (bsc#1276838). - CVE-2026-79602: x86: improper handling of HVM emulation return codes (bsc#1276839). - CVE-2026-79603: unconditionally do TLB flushing ahead of page scrubbing (bsc#1276841). - CVE-2026-79609: x86: XPTI may break on huge-memory systems (bsc#1283321). - CVE-2026-79610: grant-table: double version change race (bsc#1283322). - CVE-2026-79611: VMX: VMentry failure with branch tracing and blocked states (bsc#1283323). - CVE-2026-102700: gnttab: cache-flush handling may cause page reference leak (bsc#1283325). - CVE-2026-102703,CVE-2026-102704: arbitrary read/write via grant copy (bsc#1288663).

Non security issue fixed:

- Update to Xen 4.18.6 security bug fix release (bsc#1027519).

Other sources

This update for xen fixes the following issues: Security issues fixed: CVE-2026-62437: x86: DMs may cause mem leak by IRQ binding (bsc#1276838). CVE-2026-79602: x86: improper handling of HVM emulation return codes (bsc#1276839). CVE-2026-79603: unconditionally do TLB flushing ahead of page scrubbing (bsc#1276841). CVE-2026-79609: x86: XPTI may break on huge-memory systems (bsc#1283321). CVE-2026-79610: grant-table: double version change race (bsc#1283322). CVE-2026-79611: VMX: VMentry failure with branch tracing and blocked states (bsc#1283323). CVE-2026-102700: gnttab: cache-flush handling may cause page reference leak (bsc#1283325). CVE-2026-102703,CVE-2026-102704: arbitrary read/write via grant copy (bsc#1288663). Non security issue fixed: Update to Xen 4.18.6 security bug fix release (bsc#1027519).

— SUSE

Affected Software

42 affected componentsFixes available
suse/xen<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
All of the following
SUSE SUSE Linux Enterprise Server for SAP Applications 15 SP6 (x86_64)
Any of the following
suse/xen-libs-debuginfo<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools-domu-debuginfo<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools-domu<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-debugsource<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools-debuginfo<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-libs<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-devel<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
All of the following
SUSE SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
suse/xen-tools-xendomains-wait-disk<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
All of the following
SUSE openSUSE Leap 15.6 (x86_64)
Any of the following
suse/xen-libs<32bit-4.18.6_03-150600.3.56.1
32bit-4.18.6_03-150600.3.56.1
suse/xen<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-libs<32bit-debuginfo-4.18.6_03-150600.3.56.1
32bit-debuginfo-4.18.6_03-150600.3.56.1
suse/xen-tools-debuginfo<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-doc-html<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
All of the following
SUSE openSUSE Leap 15.6 (i586 x86_64)
Any of the following
suse/xen-libs-debuginfo<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools-domu-debuginfo<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools-domu<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-debugsource<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-libs<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-devel<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
All of the following
SUSE openSUSE Leap 15.6 (noarch)
suse/xen-tools-xendomains-wait-disk<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
All of the following
SUSE SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64)
Any of the following
suse/xen-libs-debuginfo<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools-domu-debuginfo<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools-domu<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-debugsource<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-tools-debuginfo<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-libs<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
suse/xen-devel<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1
All of the following
SUSE SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
suse/xen-tools-xendomains-wait-disk<4.18.6_03-150600.3.56.1
4.18.6_03-150600.3.56.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade suse/xen to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  2. Upgrade

    Upgrade suse/xen-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  3. Upgrade

    Upgrade suse/xen-tools-domU-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  4. Upgrade

    Upgrade suse/xen-tools to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  5. Upgrade

    Upgrade suse/xen-tools-domU to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  6. Upgrade

    Upgrade suse/xen-debugsource to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  7. Upgrade

    Upgrade suse/xen-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  8. Upgrade

    Upgrade suse/xen-libs to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  9. Upgrade

    Upgrade suse/xen-devel to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  10. Upgrade

    Upgrade suse/xen-tools-xendomains-wait-disk to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  11. Upgrade

    Upgrade suse/xen-libs to a version that resolves this vulnerability.

    Fixed in 32bit-4.18.6_03-150600.3.56.1
  12. Upgrade

    Upgrade suse/xen-libs to a version that resolves this vulnerability.

    Fixed in 32bit-debuginfo-4.18.6_03-150600.3.56.1
  13. Upgrade

    Upgrade suse/xen-doc-html to a version that resolves this vulnerability.

    Fixed in 4.18.6_03-150600.3.56.1
  14. Upgrade

    Upgrade xen to a version that resolves this vulnerability.

    Fixed in 4.18.6

Event History

Nov 9, 2026
Advisory Published
via OSV·01:24 PM
Data Sourced
via OSV·01:24 PM
DescriptionAffected Software
Data Sourced
via SUSE·01:24 PM
RemedyDescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Company

Resources

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