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Alerts This Week
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Fedora 42: Xen Critical Exceptions and Scheduler Attacks 2025-ddaa63a0f5

fedora
Calendar Grey August 8, 2025
Scroller Fedora
Fedora 42 enhances xen with essential patches to counter transitive threats and rectify flaws in exception management.
update to xen-4.19.3 includes patches for x86: Incorrect stubs exception handling for flags recovery [XSA-470, CVE-2025-27465] x86: Transitive Scheduler Attacks [XSA-471, CVE-2024-...

Summary

This package contains the XenD daemon and xm command line

tools, needed to manage virtual machines running under the

Xen hypervisor

Update Information:

update to xen-4.19.3 includes patches for x86: Incorrect stubs exception handling for flags recovery [XSA-470, CVE-2025-27465] x86: Transitive Scheduler Attacks [XSA-471, CVE-2024-36350, CVE-2024-36357]

Topics%20covered

Topics Covered

security advisory fedora linux virtual machine exception handling transitive attack

Change Log

* Tue Aug 5 2025 Michael Young - 4.19.3-2 - update to xen-4.19.3 remove patches now included or superceded upstream includes patches for x86: Incorrect stubs exception handling for flags recovery [XSA-470, CVE-2025-27465] x86: Transitive Scheduler Attacks [XSA-471, CVE-2024-36350, CVE-2024-36357]

References


[ 1 ] Bug #2381572 - CVE-2025-27465 xen: Xen: Incorrect Exception Handling [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2381572

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-ddaa63a0f5' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
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Name: xen
Product: Fedora 42
Version: 4.19.3
Release: 2.fc42
URL: https://xenproject.org/
Summary: Xen is a virtual machine monitor

Topics%20covered

Topics Covered

security advisory fedora linux virtual machine exception handling transitive attack

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