USN-8889-1: Linux kernel (OEM) vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table RMP checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory...

USN-8889-1 linux-oem-7.0 vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table RMP checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory...

USN-8888-1: Linux kernel (Azure) vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table RMP checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory...

USN-8888-1 linux-azure, linux-azure-fde vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table RMP checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory...

cve-2024-21980-poc

SEV Firmware Vulnerability This repo contains an exploit for a vulnerability in the SEV firmware. The exploit allows decrypting arbitrary memory of an SEV-SNP guest after it's been decommissioned. Tested on version 1.55.16 latest as of time of writing. Root Cause The SEV firmware has a table call...

cve-2023-31355-poc

SEV Firmware Vulnerability This repo contains an exploit for a vulnerability in the SEV firmware. The exploit allows decrypting arbitrary memory of an SEV-SNP guest after it's been decommissioned. Tested on version 1.55.16 latest as of time of writing. Root Cause snpreclaimbuffer unconditionally...

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...

EUVD-2026-80648

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 KVM: SEV: Forcefully invalidate SNP VMSA if its backing gmem page is zapped

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: Undefined Security Weakness

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...

Linux Distros Unpatched Vulnerability : CVE-2026-80853

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: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting...

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

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 ...

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...

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...

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...

CVE-2026-80853: Undefined Security Weakness

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...