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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen (if needed) when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbed page.
FEDORA-2026-1d448c1d40 (xen-4.21.2-2.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-1d448c1d40
FEDORA-2026-1d448c1d40 has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-1d448c1d40` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-1d448c1d40 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-a9ea805bc1 (xen-4.20.4-2.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-a9ea805bc1
FEDORA-2026-a9ea805bc1 has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-a9ea805bc1` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a9ea805bc1 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-1d448c1d40 (xen-4.21.2-2.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-a9ea805bc1 (xen-4.20.4-2.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.