SUSE-SU-2026:4090-1

    Dashboard / Vulnerabilities / SUSE-SU-2026:4090-1

    SUSE-SU-2026:4090-1

    Published: 8 Sept 2026Last Modified: 13 Sept 2026

    Summary: Security update for xen

    Details: 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).

    References: https://www.suse.com/support/update/announcement/2026/suse-su-20264090-1/, https://bugzilla.suse.com/1027519, https://bugzilla.suse.com/1271528, https://bugzilla.suse.com/1271530, https://bugzilla.suse.com/1271531, https://bugzilla.suse.com/1271532, https://bugzilla.suse.com/1271533, https://bugzilla.suse.com/1271534, https://bugzilla.suse.com/1271535, https://bugzilla.suse.com/1271536, https://bugzilla.suse.com/1271537, https://bugzilla.suse.com/1271538, https://bugzilla.suse.com/1271539, https://bugzilla.suse.com/1271947, https://bugzilla.suse.com/1276838, https://bugzilla.suse.com/1276839, https://bugzilla.suse.com/1276841, https://www.suse.com/security/cve/CVE-2026-42493, https://www.suse.com/security/cve/CVE-2026-42494, https://www.suse.com/security/cve/CVE-2026-42495, https://www.suse.com/security/cve/CVE-2026-62423, https://www.suse.com/security/cve/CVE-2026-62424, https://www.suse.com/security/cve/CVE-2026-62425, https://www.suse.com/security/cve/CVE-2026-62426, https://www.suse.com/security/cve/CVE-2026-62427, https://www.suse.com/security/cve/CVE-2026-62428, https://www.suse.com/security/cve/CVE-2026-62429, https://www.suse.com/security/cve/CVE-2026-62430, https://www.suse.com/security/cve/CVE-2026-62431, https://www.suse.com/security/cve/CVE-2026-62432, https://www.suse.com/security/cve/CVE-2026-62433, https://www.suse.com/security/cve/CVE-2026-62434, https://www.suse.com/security/cve/CVE-2026-62437, https://www.suse.com/security/cve/CVE-2026-79602, https://www.suse.com/security/cve/CVE-2026-79603

    Affected packages

    Package

    Name: xen

    Purl: pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.20.4_04-150700.3.46.1

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    SUSE-SU-2026:4090-1 | CVE-DB