Medium: spice-vdagent

Issue Overview: A path traversal vulnerability was found in spice-vdagent. This flaw allows a malicious or compromised SPICE host to write arbitrary files to any location on the guest operating system. This occurs because the filename provided by the SPICE host during file transfers is not proper...

Security Bulletin: This Power System update is being released to address CVE-2026-17042

Summary Power Systems Firmware is affected by a vulnerability in host firmware NVRAM parsing. An attacker with root access to a guest partition on an OpenPOWER system can write a specially crafted NVRAM image, causing the host firmware boot stage to crash with possible memory corruption. This...

Security Bulletin: This Power System update is being released to address CVE-2026-17091

Summary Power Systems Firmware is affected by a vulnerability in the PowerVM hypervisor call interface. An attacker with root access to a guest partition can issue a specially crafted hypervisor call to inject an arbitrary amount of data into hypervisor or partition memory, resulting in either a...

CVE-2026-74573

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu-v3-iommufd: Require exactly one Stream ID for a vDEVICE armvsmmuvsidtosid maps a guest's vSID to a single physical Stream ID taken from master-streams0, assuming a device has exactly one stream. A device with sever...

CVE-2026-74311

In the Linux kernel, the following vulnerability has been resolved: virtio: rtc: tear down old virtqueues before restore virtiodevicerestore resets the device and restores the negotiated features before calling -restore. viortcfreeze intentionally leaves the existing virtqueues in place so the...

CVE-2026-72412

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix handling of PAGEUNUSED pte bit The PAGEUNUSED softbit should not really be lying around. Its sole purpose is to signal to trytounmapone and trytomigrateone that the page can be discarded instead of being moved /...

UBUNTU-CVE-2026-72412

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix handling of PAGEUNUSED pte bit The PAGEUNUSED softbit should not really be lying around. Its sole purpose is to signal to trytounmapone and trytomigrateone that the page can be discarded instead of being moved /...

CVE-2026-72412

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix handling of PAGEUNUSED pte bit The PAGEUNUSED softbit should not really be lying around. Its sole purpose is to signal to trytounmapone and trytomigrateone that the page can be discarded instead of being moved /...

CVE-2026-74311

In the Linux kernel, the following vulnerability has been resolved: virtio: rtc: tear down old virtqueues before restore virtiodevicerestore resets the device and restores the negotiated features before calling -restore. viortcfreeze intentionally leaves the existing virtqueues in place so the...

CVE-2026-72287

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Move vTPR vs. TPR Threshold consistency check into "normal" checks Move the off-by-default consistency check for vmcs12.tprthreshold vs. the virtual APIC vTPR into the "normal" controls checks, as waiting until KVM has...

CVE-2026-72284

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore pending PV EOI if the vCPU has since disabled PV EOIs Ignore KVM's internal "service pending PV EOI" request if the vCPU has disabled PV EOIs since the request was made. Asserting that PV EOIs are enabled can fai...

CVE-2026-72086

In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Free the command tag on the TMR submit-failure path scsibackdeviceaction obtains a command tag in scsibackgetpendreq and submits a task-management request with targetsubmittmr. When targetsubmittmr fails it...

CVE-2026-74356 vhost: fix vhost_get_avail_idx for a non empty ring

In the Linux kernel, the following vulnerability has been resolved: vhost: fix vhostgetavailidx for a non empty ring vhostgetavailidx is supposed to report whether it has updated vq-availidx. Instead, it returns whether all entries have been consumed, which is usually the same. But not always - i...

CVE-2026-74311 virtio: rtc: tear down old virtqueues before restore

In the Linux kernel, the following vulnerability has been resolved: virtio: rtc: tear down old virtqueues before restore virtiodevicerestore resets the device and restores the negotiated features before calling -restore. viortcfreeze intentionally leaves the existing virtqueues in place so the...

CVE-2026-74311 virtio: rtc: tear down old virtqueues before restore

In the Linux kernel, the following vulnerability has been resolved: virtio: rtc: tear down old virtqueues before restore virtiodevicerestore resets the device and restores the negotiated features before calling -restore. viortcfreeze intentionally leaves the existing virtqueues in place so the...

EUVD-2026-59458

In the Linux kernel, the following vulnerability has been resolved: virtio: rtc: tear down old virtqueues before restore virtiodevicerestore resets the device and restores the negotiated features before calling -restore. viortcfreeze intentionally leaves the existing virtqueues in place so the...

CVE-2026-72412

The CVE-2026-72412 entry concerns the Linux kernel s390/mm subsystem and the _PAGE_UNUSED (PAGE_UNUSED) PTE bit. Root cause: KVM could set the bit for unmapped guest pages; later paths could leave it set, so present pages might be treated as unused, risking guest corruption. The fix implemented i...

CVE-2026-72412 s390/mm: Fix handling of _PAGE_UNUSED pte bit

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix handling of PAGEUNUSED pte bit The PAGEUNUSED softbit should not really be lying around. Its sole purpose is to signal to trytounmapone and trytomigrateone that the page can be discarded instead of being moved /...

CVE-2026-72412 s390/mm: Fix handling of _PAGE_UNUSED pte bit

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix handling of PAGEUNUSED pte bit The PAGEUNUSED softbit should not really be lying around. Its sole purpose is to signal to trytounmapone and trytomigrateone that the page can be discarded instead of being moved /...

EUVD-2026-59311

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix handling of PAGEUNUSED pte bit The PAGEUNUSED softbit should not really be lying around. Its sole purpose is to signal to trytounmapone and trytomigrateone that the page can be discarded instead of being moved /...