PoD: Don't try to reclaim special pages

ISSUE DESCRIPTION A guest started with Populated on Demand enabled PoD can attempt to reclaim pages which aren't regular guest RAM. This can cause corruption of memory management state in Xen. IMPACT A buggy or malicious guest can cause corruption of Xen's state, leading to crashes or other...

buffer overruns in libfsimage iso9660 handling

ISSUE DESCRIPTION The directory and Rock Ridge / SUSP walk in libfsimage's iso9660 driver derives several lengths directly from attacker-controlled on-disk fields without validating them: The directory loop itself assumes a good record length. This is CVE-2026-42494. The calculation of the System...

XenServer Security Update for Multiple Issues

Severity :High Description of Problem Several issueshave beenidentifiedthat affect XenServer 8.4 and XenServer 9. Collectively, these issues may allowa malicious privileged userin a guest VM to compromise or crash the host. Theseissueshavethe following identifiers: CVE-2026-42492XenServer 9 only...

CVE-2026-64456

A flaw was found in the Linux kernel's virtio-rng driver. A malicious or buggy virtualized hardware random number generator virtio-rng backend can report an overly large data length to the guest operating system. This unchecked length can lead to an out-of-bounds read, causing the driver to acces...

CVE-2026-14568

The User Frontend: AI Powered Frontend Post Submission, User Directory, User Profile, Membership & User Registration WordPress plugin before 4.3.8 does not correctly verify ownership before deleting an attachment, allowing unauthenticated attackers to permanently delete author-less attachments su...

CVE-2026-14568 WP User Frontend < 4.3.8 - Unauthenticated Author-less Attachment Deletion

The User Frontend: AI Powered Frontend Post Submission, User Directory, User Profile, Membership & User Registration WordPress plugin before 4.3.8 does not correctly verify ownership before deleting an attachment, allowing unauthenticated attackers to permanently delete author-less attachments su...

CVE-2026-14568

CVE-2026-14568 affects the WordPress plugin “User Frontend: AI Powered Frontend Post Submission, User Directory, User Profile, Membership & User Registration” (before 4.3.8). The vulnerability arises because the plugin does not correctly verify ownership before deleting an attachment, enabling un...

CVE-2026-14568

The User Frontend: AI Powered Frontend Post Submission, User Directory, User Profile, Membership & User Registration WordPress plugin before 4.3.8 does not correctly verify ownership before deleting an attachment, allowing unauthenticated attackers to permanently delete author-less attachments su...

EUVD-2026-49082

The User Frontend: AI Powered Frontend Post Submission, User Directory, User Profile, Membership & User Registration WordPress plugin before 4.3.8 does not correctly verify ownership before deleting an attachment, allowing unauthenticated attackers to permanently delete author-less attachments su...

ownCloud Guests - User Enumeration

ownCloud Guests before 0.12.5 contains an unauthenticated user enumeration vulnerability caused by insufficient validation of the token in showPasswordForm at /apps/guests/register/email/token, letting unauthenticated attackers enumerate valid guest users, exploit requires no authentication. id:...

osTicket - Arbitrary File Read

Enhancesoft osTicket versions 1.18.x prior to 1.18.3 and 1.17.x prior to 1.17.7 contain an arbitrary file read vulnerability in the ticket PDF export functionality. A remote attacker can submit a ticket containing crafted rich-text HTML that includes PHP filter expressions which are insufficientl...

XWiki < 4.10.20 - Remote code execution

XWiki is vulnerable to a remote code execution RCE attack through its user registration feature. This issue allows an attacker to execute arbitrary code by crafting malicious payloads in the "first name" or "last name" fields during user registration. This impacts all installations that have user...

UBUNTU-CVE-2026-64456

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-reported used.len directly into vi-dataavail. copydata then indexes vi-data using vi-dataidx advanced by previous copydata calls and issue...

UBUNTU-CVE-2026-64285

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Pin source page for write when adding CPUID data for SNP guest When populating a guestmemfd instance with the initial CPUID data for an SNP guest, acquire a writable pin on the source page as KVM will write back the...

UBUNTU-CVE-2026-64283

In the Linux kernel, the following vulnerability has been resolved: KVM: guestmemfd: Treat memslot binding offset+size as unsigned values When binding a memslot to a guestmemfd file, treat the offset and size as unsigned values to fix a bug where the sum of the two can result in a false negative...

SUSE CVE-2026-64456

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-reported used.len directly into vi-dataavail. copydata then indexes vi-data using vi-dataidx advanced by previous copydata calls and issue...

CVE-2026-64456

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-reported used.len directly into vi-dataavail. copydata then indexes vi-data using vi-dataidx advanced by previous copydata calls and issue...

EUVD-2026-48857

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Unconditionally recompute CR8 intercept on PPR update The TPRTHRESHOLD field in the VMCS is used by VMX to induce VM exits when the guest's virtual TPR falls under the specified threshold, allowing KVM to inject...

EUVD-2026-48800

In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio: clamp device-reported used.len at copydata randomrecvdone stores the device-reported used.len directly into vi-dataavail. copydata then indexes vi-data using vi-dataidx advanced by previous copydata calls and issue...

EUVD-2026-48998

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Clear hyprunningvcpu when flushing the pKVM hyp vCPU flushhypvcpu copies the host vCPU context into the hyp's private vCPU on every run. ctxttovcpu expects a guest context to have a NULL hyprunningvcpu, which is only...