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Debian Dovecot High Severity Service Disruption Info Leak Flaw DLA-4617-1

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Debian 11 gsasl Critical DoS Threat Advisory DLA-4618-1 CVE-2026-48829

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SUSE Linux Micro 6.0 Important Libzypp Libsolv Security Update 2026-21988-1

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SUSE Linux Micro Critical Ignition Patch CVE-2026-33814

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Ls Advisories Suse Esm H240
Price Tag 1security advisorymoderateSuSE

SUSE openSUSE Leap 15.4 Advisory 2026-1692-1 Moderate Xen DoS

An update that solves three vulnerabilities can now be installed.. # Security update for xen Announcement ID: SUSE-SU-2026:1692-1 Release Date: 2026-05-05T08:03:59Z Rating: moderate References: * bsc#1262178 * bsc#1262180 * bsc#1262428 Cross-References: * CVE-2025-54505 * CVE-2026-23557 * CVE-2026-23558 CVSS scores: * CVE-2025-54505 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N * CVE-2025-54505 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N * CVE-2025-54505 ( NVD ): 2.0 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X * CVE-2026-23557 ( SUSE ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H * CVE-2026-23558 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N * CVE-2026-23558 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro for Rancher 5.3 * SUSE Linux Enterprise Micro for Rancher 5.4 An update that solves three vulnerabilities can now be installed. ## Description: This update for xen fixes the following issues: * 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). ## 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: * SUSE Linux Enterprise Micro for Rancher 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-1692=1 * SUSE LinuxEnterprise Micro 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-1692=1 * SUSE Linux Enterprise Micro for Rancher 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-1692=1 * SUSE Linux Enterprise Micro 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-1692=1 * openSUSE Leap 15.4 zypper in -t patch SUSE-2026-1692=1 ## Package List: * SUSE Linux Enterprise Micro for Rancher 5.3 (x86_64) * xen-debugsource-4.16.7_08-150400.4.81.2 * xen-libs-4.16.7_08-150400.4.81.2 * xen-libs-debuginfo-4.16.7_08-150400.4.81.2 * SUSE Linux Enterprise Micro 5.3 (x86_64) * xen-debugsource-4.16.7_08-150400.4.81.2 * xen-libs-4.16.7_08-150400.4.81.2 * xen-libs-debuginfo-4.16.7_08-150400.4.81.2 * SUSE Linux Enterprise Micro for Rancher 5.4 (x86_64) * xen-debugsource-4.16.7_08-150400.4.81.2 * xen-libs-4.16.7_08-150400.4.81.2 * xen-libs-debuginfo-4.16.7_08-150400.4.81.2 * SUSE Linux Enterprise Micro 5.4 (x86_64) * xen-debugsource-4.16.7_08-150400.4.81.2 * xen-libs-4.16.7_08-150400.4.81.2 * xen-libs-debuginfo-4.16.7_08-150400.4.81.2 * openSUSE Leap 15.4 (aarch64 x86_64 i586) * xen-libs-debuginfo-4.16.7_08-150400.4.81.2 * xen-devel-4.16.7_08-150400.4.81.2 * xen-tools-domU-4.16.7_08-150400.4.81.2 * xen-tools-domU-debuginfo-4.16.7_08-150400.4.81.2 * xen-libs-4.16.7_08-150400.4.81.2 * xen-debugsource-4.16.7_08-150400.4.81.2 * openSUSE Leap 15.4 (x86_64) * xen-libs-32bit-debuginfo-4.16.7_08-150400.4.81.2 * xen-libs-32bit-4.16.7_08-150400.4.81.2 * openSUSE Leap 15.4 (aarch64 x86_64) * xen-tools-debuginfo-4.16.7_08-150400.4.81.2 * xen-doc-html-4.16.7_08-150400.4.81.2 * xen-4.16.7_08-150400.4.81.2 * xen-tools-4.16.7_08-150400.4.81.2 * openSUSE Leap 15.4 (noarch) * xen-tools-xendomains-wait-disk-4.16.7_08-150400.4.81.2 * openSUSE Leap 15.4 (aarch64_ilp32) * xen-libs-64bit-debuginfo-4.16.7_08-150400.4.81.2 * xen-libs-64bit-4.16.7_08-150400.4.81.2 ## References: *https://www.suse.com/security/cve/CVE-2025-54505.html * https://www.suse.com/security/cve/CVE-2026-23557.html * https://www.suse.com/security/cve/CVE-2026-23558.html * https://bugzilla.suse.com/show_bug.cgi?id=1262178 * https://bugzilla.suse.com/show_bug.cgi?id=1262180 * https://bugzilla.suse.com/show_bug.cgi?id=1262428 . Critical update for SUSE addressing three issues in xen, ensuring system stability and security. Immediate action recommended.. SUSE Update, Xen Security, OpenSUSE Patch, Linux Security Fixes. . LinuxSecurity.com Team

Calendar 2 May 05, 2026 SuSE
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Ls Advisories Fedora Esm H240
Price Tag 1security advisorydenial of servicefedora

Fedora 43 Xen Critical DoS Vulnerabilities via XS_RESET_WATCHES Exploit

oxenstored keeps quota related use counts across domain destruction [XSA-483, CVE-2026-23556] Xenstored DoS via XS_RESET_WATCHES command [XSA-484, CVE-2026-23557] grant table v2 race in status page mapping [XSA-486, CVE-2026-23558] x86: Floating Point Divider State Sampling [XSA-488, CVE-2025-54505]. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-78cd69d9ae 2026-05-01 03:01:50.286568+00:00 -------------------------------------------------------------------------------- Name : xen Product : Fedora 43 Version : 4.20.3 Release : 2.fc43 URL : http://xen.org/ Summary : Xen is a virtual machine monitor Description : This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor -------------------------------------------------------------------------------- Update Information: oxenstored keeps quota related use counts across domain destruction [XSA-483, CVE-2026-23556] Xenstored DoS via XS_RESET_WATCHES command [XSA-484, CVE-2026-23557] grant table v2 race in status page mapping [XSA-486, CVE-2026-23558] x86: Floating Point Divider State Sampling [XSA-488, CVE-2025-54505] -------------------------------------------------------------------------------- ChangeLog: * Wed Apr 29 2026 Michael Young - 4.20.3-2 - oxenstored keeps quota related use counts across domain destruction [XSA-483, CVE-2026-23556] - Xenstored DoS via XS_RESET_WATCHES command [XSA-484, CVE-2026-23557] - grant table v2 race in status page mapping [XSA-486, CVE-2026-23558] - x86: Floating Point Divider State Sampling [XSA-488, CVE-2025-54505] -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-78cd69d9ae' at the command line. For more information, refer to the dnf documentation availableat http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it. To unsubscribe send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it. Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new . Critical security update for Fedora 43 Xen includes multiple issues affecting virtual machine performance and integrity.. Fedora 43 Update, Xen Security, DoS Mitigation, Virtual Machine Management, Security Advisory. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 May 01, 2026 •Critical Fedora
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