New DDRop Attack Breaks Intel TDX and AMD SEV-SNP Confidential Computing

Researchers have disclosed a new hardware attack, called DDRop , that breaks the memory protection in Intel and AMD confidential computing by silently dropping writes to a server's memory, so the processor keeps reading old encrypted data as if it were current. The attack requires an attacker who...

igvm

igvm 本项目是独立客户虚拟机（Independent Guest Virtual Machine，IGVM）文件格式的所在地。格式规范见 igvmdefs crate，二进制格式的 Rust 实现则在 igvm crate 中。 IGVM 文件格式旨在封装启动虚拟机所需的所有信息，适用于任何虚拟化栈，并支持诸如 AMD SEV-SNP 和 Intel TDX 等不同隔离技术。 在概念层面上，该文件格式是由生成文件的工具创建的一组命令，加载器使用这些命令来构建初始的客户状态。文件格式还包含测量信息，底层平台将使用这些信息确认文件已正确加载并由相应权威机构签名。 参与贡献...

CVE-2026-89751

A flaw was found in the Linux kernel's x86/tdx component. An off-by-one error in the handlein and handleout functions, specifically in the GENMASK calculation for port I/O operations, causes the mask to be one bit too wide. This incorrect handling of I/O sizes could potentially lead to unintended...

AZL-100772 CVE-2026-89751 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

CVE-2026-89751

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

EUVD-2026-76663

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

CVE-2026-89751

CVE-2026-89751 is an off-by-one error in the Linux kernel's x86 TDX (Trusted Domain Extensions) port I/O handling. The functions handle_in() and handle_out() in arch/x86/coco/tdx/tdx.c compute a bitmask using GENMASK(BITS_PER_BYTE * size, 0). Since GENMASK(h, l) includes bit h , this produces a m...

CVE-2026-89751 x86/tdx: Fix off-by-one in port I/O handling

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

CVE-2026-89751 x86/tdx: Fix off-by-one in port I/O handling

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

PT-2026-90467

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handle in and handle out in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITS PER BYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits...

kernel: microcode_ctl: Intel Xeon 6 Processors: Privilege escalation via improper memory range handling in SMM

A flaw was found in IntelR XeonR 6 processors when using IntelR TDX within System Management Mode SMM. Improper handling of overlap between protected memory ranges may allow a local attacker with privileged user access to escalate privileges. This vulnerability could lead to high impact on...

HPESBHF05108 rev.1 - HPE StoreEasy Server Using Certain Intel Processors, INTEL-SA-01436, Intel Trust Domain Extensions (Intel TDX) module Advisory, Multiple Vulnerabilities

Potential Security Impact: Local: Denial of Service DoS, Disclosure of Information, Escalation of Privilege SUPPORTED SOFTWARE VERSIONS: ONLY impacted versions are listed. HPE StoreEasy 1470 Performance - Prior to BIOS v3.0008-20-2026 HPE StoreEasy 1470 Storage - Prior to BIOS v3.0008-20-2026 HPE...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098672)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098672 advisory. In the Linux kernel before 6.6.7, an untrusted VMM can trigger int80 syscall handling at any given point. This is related to arch/x86/coco/tdx/tdx.c and...

Astra Linux – Vulnerability in Intel Microcode

Improper input validation in some IntelR TDX module software prior to version 1.5.05.46.698 may allow a privileged user to potentially enable privilege escalation through local access...

OESA-2026-3408 microcode_ctl security update

This is a tool to transform and deploy microcode update for x86 CPUs. Security Fixes: Improper handling of overlap between protected memory ranges for some IntelR XeonR 6 processors when using IntelR TDX within SMM may allow an escalation of privilege. SMM adversary with a privileged user combine...

CVE-2026-72285

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine TDX Trust Domain Extensions module. A local attacker, by concurrently modifying the CPUID entry count during the initialization of a virtual machine, could cause the CPUID parsing to access memory beyond the intended...

Linux Distros Unpatched Vulnerability : CVE-2026-72285

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: TDX: Reject concurrent change to CPUID entry count Reject KVMTDXINITVM if userspace changes cpuid.nent between the initial read and the subsequent copy of...

CVE-2026-72285

In the Linux kernel, the following vulnerability has been resolved: KVM: TDX: Reject concurrent change to CPUID entry count Reject KVMTDXINITVM if userspace changes cpuid.nent between the initial read and the subsequent copy of the initialization data. tdxtdinit first reads userdata-cpuid.nent to...

CVE-2026-72285

In the Linux kernel, the following vulnerability has been resolved: KVM: TDX: Reject concurrent change to CPUID entry count Reject KVMTDXINITVM if userspace changes cpuid.nent between the initial read and the subsequent copy of the initialization data. tdxtdinit first reads userdata-cpuid.nent to...

UBUNTU-CVE-2026-72285

In the Linux kernel, the following vulnerability has been resolved: KVM: TDX: Reject concurrent change to CPUID entry count Reject KVMTDXINITVM if userspace changes cpuid.nent between the initial read and the subsequent copy of the initialization data. tdxtdinit first reads userdata-cpuid.nent to...