SUSE-SU-2026:4090-1: important: Security update for xen
SLE-SECURITY-UPDATES
null at suse.de
Tue Sep 8 20:31:19 UTC 2026
# Security update for xen
Announcement ID: SUSE-SU-2026:4090-1
Release Date: 2026-09-08T12:26:57Z
Rating: important
References:
* bsc#1027519
* bsc#1271528
* bsc#1271530
* bsc#1271531
* bsc#1271532
* bsc#1271533
* bsc#1271534
* bsc#1271535
* bsc#1271536
* bsc#1271537
* bsc#1271538
* bsc#1271539
* bsc#1271947
* bsc#1276838
* bsc#1276839
* bsc#1276841
* jsc#PED-8907
Cross-References:
* CVE-2026-42493
* CVE-2026-42494
* CVE-2026-42495
* CVE-2026-62423
* CVE-2026-62424
* CVE-2026-62425
* CVE-2026-62426
* CVE-2026-62427
* CVE-2026-62428
* CVE-2026-62429
* CVE-2026-62430
* CVE-2026-62431
* CVE-2026-62432
* CVE-2026-62433
* CVE-2026-62434
* CVE-2026-62437
* CVE-2026-79602
* CVE-2026-79603
CVSS scores:
* CVE-2026-42493 ( SUSE ): 6.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
* CVE-2026-42493 ( SUSE ): 5.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
* CVE-2026-42493 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-42494 ( SUSE ): 8.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
* CVE-2026-42494 ( SUSE ): 8.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
* CVE-2026-42494 ( NVD ): 6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
* CVE-2026-42495 ( SUSE ): 8.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
* CVE-2026-42495 ( SUSE ): 8.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
* CVE-2026-42495 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2026-62423 ( SUSE ): 8.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
* CVE-2026-62423 ( SUSE ): 8.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
* CVE-2026-62423 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2026-62424 ( SUSE ): 8.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
* CVE-2026-62424 ( SUSE ): 8.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
* CVE-2026-62424 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2026-62425 ( SUSE ): 8.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
* CVE-2026-62425 ( SUSE ): 8.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
* CVE-2026-62425 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2026-62426 ( SUSE ): 6.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
* CVE-2026-62426 ( SUSE ): 5.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
* CVE-2026-62426 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-62427 ( SUSE ): 6.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
* CVE-2026-62427 ( SUSE ): 5.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
* CVE-2026-62427 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-62428 ( SUSE ): 8.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
* CVE-2026-62428 ( SUSE ): 8.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
* CVE-2026-62428 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
* CVE-2026-62429 ( SUSE ): 7.1
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:L/SI:L/SA:H
* CVE-2026-62429 ( SUSE ): 7.3 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H
* CVE-2026-62429 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-62430 ( SUSE ): 2.1
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
* CVE-2026-62430 ( SUSE ): 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
* CVE-2026-62430 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-62431 ( SUSE ): 6.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
* CVE-2026-62431 ( SUSE ): 5.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
* CVE-2026-62431 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-62432 ( SUSE ): 8.4
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:L/SI:L/SA:H
* CVE-2026-62432 ( SUSE ): 8.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H
* CVE-2026-62432 ( NVD ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
* CVE-2026-62433 ( SUSE ): 6.9
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
* CVE-2026-62433 ( SUSE ): 5.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
* CVE-2026-62433 ( NVD ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
* CVE-2026-62434 ( SUSE ): 7.1
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:L/SI:L/SA:H
* CVE-2026-62434 ( SUSE ): 7.3 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H
* CVE-2026-62434 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-62437 ( SUSE ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
* CVE-2026-79602 ( SUSE ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
* CVE-2026-79603 ( SUSE ): 5.2 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
* CVE-2026-79603 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected Products:
* Basesystem Module 15-SP7
* Server Applications Module 15-SP7
* SUSE Linux Enterprise Desktop 15 SP7
* SUSE Linux Enterprise Real Time 15 SP7
* SUSE Linux Enterprise Server 15 SP7
* SUSE Linux Enterprise Server for SAP Applications 15 SP7
An update that solves 18 vulnerabilities and contains one feature can now be
installed.
## Description:
This update for xen fixes the following issues:
Update to version 4.20.3 (jsc#PED-8907).
Security issues fixed:
* CVE-2026-42493: x86 shadow paging is deprecated (bsc#1271528).
* CVE-2026-42494,CVE-2026-42495,CVE-2026-62423,CVE-2026-62424,CVE-2026-62425:
buffer overruns in libfsimage iso9660 handling (bsc#1271530).
* CVE-2026-62426,CVE-2026-62427: sysctl and platform-op locks open to abuse
(bsc#1271531).
* CVE-2026-62428: grant-table: type confusion in grant-copy (bsc#1271532).
* CVE-2026-62429: vNUMA domain cleanup may race other operations
(bsc#1271534).
* CVE-2026-62430: x86: Out-of-bounds read in vRTC emulation (bsc#1271535).
* CVE-2026-62431: Viridian STIMER division by zero (bsc#1271536).
* CVE-2026-62432: evtchn: Race between FIFO expand and reset (bsc#1271537).
* CVE-2026-62433: correct buffer checks for DM_OP hypercalls (bsc#1271538).
* CVE-2026-62434: PoD: Don't try to reclaim special pages (bsc#1271539).
* 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).
* pygrub is only supported in de-privileged mode (bsc#1271947).
Non security issue fixed:
* Xen: Missing upstream bug fixes (bsc#1027519).
## Special Instructions and Notes:
* Please reboot the system after installing this update.
## Patch Instructions:
To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
* Basesystem Module 15-SP7
zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-4090=1
* Server Applications Module 15-SP7
zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-4090=1
## Package List:
* Basesystem Module 15-SP7 (x86_64)
* xen-debugsource-4.20.4_04-150700.3.46.1
* xen-tools-domU-4.20.4_04-150700.3.46.1
* xen-libs-debuginfo-4.20.4_04-150700.3.46.1
* xen-tools-domU-debuginfo-4.20.4_04-150700.3.46.1
* xen-libs-4.20.4_04-150700.3.46.1
* Server Applications Module 15-SP7 (x86_64)
* xen-debugsource-4.20.4_04-150700.3.46.1
* xen-tools-debuginfo-4.20.4_04-150700.3.46.1
* xen-devel-4.20.4_04-150700.3.46.1
* xen-4.20.4_04-150700.3.46.1
* xen-tools-4.20.4_04-150700.3.46.1
* Server Applications Module 15-SP7 (noarch)
* xen-tools-xendomains-wait-disk-4.20.4_04-150700.3.46.1
## References:
* https://www.suse.com/security/cve/CVE-2026-42493.html
* https://www.suse.com/security/cve/CVE-2026-42494.html
* https://www.suse.com/security/cve/CVE-2026-42495.html
* https://www.suse.com/security/cve/CVE-2026-62423.html
* https://www.suse.com/security/cve/CVE-2026-62424.html
* https://www.suse.com/security/cve/CVE-2026-62425.html
* https://www.suse.com/security/cve/CVE-2026-62426.html
* https://www.suse.com/security/cve/CVE-2026-62427.html
* https://www.suse.com/security/cve/CVE-2026-62428.html
* https://www.suse.com/security/cve/CVE-2026-62429.html
* https://www.suse.com/security/cve/CVE-2026-62430.html
* https://www.suse.com/security/cve/CVE-2026-62431.html
* https://www.suse.com/security/cve/CVE-2026-62432.html
* https://www.suse.com/security/cve/CVE-2026-62433.html
* https://www.suse.com/security/cve/CVE-2026-62434.html
* https://www.suse.com/security/cve/CVE-2026-62437.html
* https://www.suse.com/security/cve/CVE-2026-79602.html
* https://www.suse.com/security/cve/CVE-2026-79603.html
* https://bugzilla.suse.com/show_bug.cgi?id=1027519
* https://bugzilla.suse.com/show_bug.cgi?id=1271528
* https://bugzilla.suse.com/show_bug.cgi?id=1271530
* https://bugzilla.suse.com/show_bug.cgi?id=1271531
* https://bugzilla.suse.com/show_bug.cgi?id=1271532
* https://bugzilla.suse.com/show_bug.cgi?id=1271533
* https://bugzilla.suse.com/show_bug.cgi?id=1271534
* https://bugzilla.suse.com/show_bug.cgi?id=1271535
* https://bugzilla.suse.com/show_bug.cgi?id=1271536
* https://bugzilla.suse.com/show_bug.cgi?id=1271537
* https://bugzilla.suse.com/show_bug.cgi?id=1271538
* https://bugzilla.suse.com/show_bug.cgi?id=1271539
* https://bugzilla.suse.com/show_bug.cgi?id=1271947
* https://bugzilla.suse.com/show_bug.cgi?id=1276838
* https://bugzilla.suse.com/show_bug.cgi?id=1276839
* https://bugzilla.suse.com/show_bug.cgi?id=1276841
* https://jira.suse.com/browse/PED-8907
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