CVE-2026-46317

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Reassign nestedmmus array behind mmulock kvm-arch.nestedmmus is walked under kvm-mmulock, including from the MMU notifier path kvmunmapgfnrange - kvmnesteds2unmap, which can run at any time. kvmvcpuinitnested...

PT-2026-48127

Name of the Vulnerable Software and Affected Versions AMD Secure Processor affected versions not specified Description Improper access control for the register interface in the Input-Output Memory Management Unit IOMMU allows a privileged attacker, such as a malicious hypervisor, to cause...

AMD secure processor 安全漏洞

The AMD Secure Processor ASP is an independent ARM Coretex-A5 chip developed by American semiconductor company AMD. The AMD Secure Processor has a security vulnerability, which stems from improper access control of the input/output memory management unit’s register interfaces. This vulnerability...

ASP non-Coherent Memory Access

CVE Details Refer to Glossary for explanation of terms CVE| CVE Description| CVSS Score ---|---|--- CVE-2025-54509| Improper access control for register interface in the input-output memory management unit IOMMU could allow a privileged attacker to cause non-coherent accesses by the AMD Secure...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ptrace: The logic related to getdumpable has been made slightly more robust. The “dumpability” of a task essentially relates to the memory image of the task—the concept stems from whether the task can generate a core dump or not...

kernel: iommu: disable SVA when CONFIG_X86 is set

A security vulnerability was found in the Linux kernel's IOMMU Shared Virtual Addressing SVA implementation on x86 architecture. When SVA is enabled, the IOMMU caches kernel page table entries. Since the kernel lacks a mechanism to notify the IOMMU when kernel page table pages are freed and...

CVE-2026-45944

A flaw was found in the Linux kernel's IOMMU Input/Output Memory Management Unit VT-d Virtualization Technology for Directed I/O component. When a context entry is being torn down, the 'Present' bit might not be cleared before other parts of the entry are zeroed. This can lead to the hardware...

PT-2026-44236

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the KVM x86 shadow paging mechanism. The shadow MMU calculates Guest Frame Numbers GFNs for direct shadow pages by adding the SPTE index to sp-gfn. This...

UBUNTU-CVE-2026-45944

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clear Present bit before tearing down context entry When tearing down a context entry, the current implementation zeros the entire 128-bit entry using multiple 64-bit writes. This creates a window where the hardware c...

CVE-2026-45944

CVE-2026-45944 affects the Linux kernel IOMMU VT-d. During context-entry teardown, the implementation zeros a 128‑bit entry in two 64‑bit writes, risking a torn entry where the Present bit remains set while other fields are zeroed, potentially causing unpredictable behavior or spurious faults. Th...

CVE-2026-45862

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush cache for PASID table before using it When writing the address of a freshly allocated zero-initialized PASID table to a PASID directory entry, do that after the CPU cache flush for this PASID table, not before i...

CVE-2026-45944

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clear Present bit before tearing down context entry When tearing down a context entry, the current implementation zeros the entire 128-bit entry using multiple 64-bit writes. This creates a window where the hardware c...

PT-2026-43812

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the Intel VT-d PASID table entry replacement process. The PASID table entry is 512 bits, and the implementation copies a new entry to the table using a single...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fixed the NULL domain upon device release. In the kdump kernel, the IOMMU operates in deferredattach mode. In this mode, info-domain may not yet be assigned by the time the releasedevice function is called. This leads...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only warnings are issued when overwriting a shadow-present SPTE, specifically when the operation is performed on direct MMUs. This adjustment applies only to MMUs that do not have shadowed gPTEs. Although it’s...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: Invoking MMU notifiers in shmem/file collapse paths. Any code path that updates page table entries must invoke MMU notifiers to ensure that secondary MMUs such as those related to KVM do not continue to access page...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: dwmac-tegra: Reading the IOMMU Stream ID from the device tree Nvidia’s Tegra MGBE controllers require the IOMMU “Stream ID” SID to be written to the MGBEWRAPAXIASID0CTRL register. The current driver is hardcoded to u...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Do not issue ATS Invalidation requests when the device is disconnected. For those endpoint devices connected to the system via hot-plug-capable ports, users can request a hot reset of the device by setting the link...

CVE-2026-43486

In the Linux kernel, the following vulnerability has been resolved: arm64: contpte: fix setaccessflags no-op check for SMMU/ATS faults contpteptepsetaccessflags compared the gathered ptepget value against the requested entry to detect no-ops. ptepget ORs AF/dirty from all sub-PTEs in the CONT...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the use of aggregate values in the contpteptepsetaccessflags function when detecting no operation...