XenServer Security Update for Multiple Issues

Severity: High Description of Problem Several issues have been identified that affect XenServer 8.4. These are: An issue that may, in some circumstances, allow a malicious privileged user in a guest VM to compromise the host. This issue has the following identifier: CVE-2026-23558 An issue that m...

Oracle Linux 8 / 9 : Unbreakable Enterprise kernel (ELSA-2025-20559)

The remote Oracle Linux 8 / 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-20559 advisory. 5.15.0-312.187.5.1 - x86/vmscape: Warn when STIBP is disabled with SMT Pawan Gupta Orabug: 38343660 - x86/bugs: Move cpubugssmtupdate down Pawan Gupta...

DEBIAN-CVE-2024-35996

In the Linux kernel, the following vulnerability has been resolved: cpu: Re-enable CPU mitigations by default for !X86 architectures Rename x86's to CPUMITIGATIONS, define it in generic code, and force it on for all architectures exception x86. A recent commit to turn mitigations off by default i...

RHEL 6 : kernel (RHSA-2023:0187)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:0187 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: hw: cpu: LFENCE/JMP Mitigation Update for...