Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

CVE-2026-53360-POC

CVE-2026-53360: تجاوز حدود الكومة في PSC لـ KVM SEV-SNP إثبات مفهوم لقراءة وكتابة خارج حدود الكومة في معالجة تغيير حالة الصفحة PSC لـ SEV-SNP في KVM. يقوم ضيف SEV-SNP ضار بجعل نواة المضيف تجتاز مصفوفة إدخالات PSC إلى ما بعد نهاية تخصيص البلاطة slab الخاصة بها. يؤدي ذلك إلى تسريب تخطيط كائنات...

DEBIAN-CVE-2026-90040

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Forcefully invalidate SNP VMSA if its backing gmem page is zapped Wire up a gmeminvalidaterange call for SNP VMs, and use it to force vCPUs to reload/recheck their guest-provided VMSA if the backing gmem page is being...

CVE-2026-90040

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Forcefully invalidate SNP VMSA if its backing gmem page is zapped Wire up a gmeminvalidaterange call for SNP VMs, and use it to force vCPUs to reload/recheck their guest-provided VMSA if the backing gmem page is being...

PT-2026-93681

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM SEV implementation where the SNP VMSA Virtual Machine Save Area is not forcefully invalidated when its backing gmem page is zapped, such as during a PUNCH HOLE...

The vulnerability of the snp_begin_psc() function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the x86 kernel of the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the snpbeginpsc function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the Linux kernel-based x86 platform is related to incorrect checking of the specified index, position, or offset in the input data. Exploiting this vulnerability could allow an...

SUSE CVE-2026-80853

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting memory of an SEV or SEV-ES guest on an SNP-enabled host via a temporary buffer, allocate a full 4KiB page for the buffer to ensure the page...

CVE-2026-80853

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting memory of an SEV or SEV-ES guest on an SNP-enabled host via a temporary buffer, allocate a full 4KiB page for the buffer to ensure the page...

CVE-2026-80853 KVM: SEV: Allocate full pages for {DE,EN}CRYPT ops on SNP-enabled hosts

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting memory of an SEV or SEV-ES guest on an SNP-enabled host via a temporary buffer, allocate a full 4KiB page for the buffer to ensure the page...

CVE-2026-80853

CVE-2026-80853 affects the Linux kernel KVM subsystem on SNP-enabled hosts . When KVM performs {de,en}crypt operations for an SEV or SEV-ES guest, it used a sub-page allocation for its temporary buffer. On SNP platforms, pages written by firmware are temporarily transferred to Firmware ownership ...

EUVD-2026-71303

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting memory of an SEV or SEV-ES guest on an SNP-enabled host via a temporary buffer, allocate a full 4KiB page for the buffer to ensure the page...

CVE-2026-80853 KVM: SEV: Allocate full pages for {DE,EN}CRYPT ops on SNP-enabled hosts

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting memory of an SEV or SEV-ES guest on an SNP-enabled host via a temporary buffer, allocate a full 4KiB page for the buffer to ensure the page...

CVE-2026-80853

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting memory of an SEV or SEV-ES guest on an SNP-enabled host via a temporary buffer, allocate a full 4KiB page for the buffer to ensure the page...

PT-2026-85731

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting memory of an SEV or SEV-ES guest on an SNP-enabled host via a temporary buffer, allocate a full 4KiB page for the buffer to ensure the page...

SUSE CVE-2026-72286

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Do not allow intra-host migration/mirroring of SNP VMs The intra-host migration/mirroring feature is not fully implemented for SEV-SNP VMs. The proper migration requires additional SNP-specific state such as...

The vulnerability of the sev_pin_memory() function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the Linux kernel-based x86 platform allows a attacker to cause a service failure.

The vulnerability of the sevpinmemory function in the arch/x86/kvm/svm/sev.c module of the virtualization subsystem on the Linux kernel-based x86 platform is related to a potential integer overflow. Exploiting this vulnerability could allow an attacker to cause a service failure...

CVE-2026-74607

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Serialize accesses to the owner and mirror list with separate lock Interaction between KVMCAPVMMOVEENCCONTEXTFROM and KVMCAPVMCOPYENCCONTEXTFROM can cause two separate issues: - in sevmigratefrom, when the destination K...

CVE-2026-72286

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Do not allow intra-host migration/mirroring of SNP VMs The intra-host migration/mirroring feature is not fully implemented for SEV-SNP VMs. The proper migration requires additional SNP-specific state such as...

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...

Linux Distros Unpatched Vulnerability : CVE-2026-63938

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Check PSC request indices against the actual size of the buffer When processing Pa...