CVE-2026-31397

In the Linux kernel, the following vulnerability has been resolved: mm/hugememory: fix use of NULL folio in movepageshugepmd movepageshugepmd handles UFFDIOMOVE for both normal THPs and huge zero pages. For the huge zero page path, srcfolio is explicitly set to NULL, and is used as a sentinel to...

UBUNTU-CVE-2026-31398

In the Linux kernel, the following vulnerability has been resolved: mm/rmap: fix incorrect pte restoration for lazyfree folios We batch unmap anonymous lazyfree folios by foliounmapptebatch. If the batch has a mix of writable and non-writable bits, we may end up setting the entire batch writable...

CVE-2026-31398 mm/rmap: fix incorrect pte restoration for lazyfree folios

In the Linux kernel, the following vulnerability has been resolved: mm/rmap: fix incorrect pte restoration for lazyfree folios We batch unmap anonymous lazyfree folios by foliounmapptebatch. If the batch has a mix of writable and non-writable bits, we may end up setting the entire batch writable...

KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE

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Linux Distros Unpatched Vulnerability : CVE-2026-23401

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE When installing an emulated MMIO SPTE, do so after dropping/zapping the existing SP...

EUVD-2026-17830

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

CVE-2026-23401

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE When installing an emulated MMIO SPTE, do so after dropping/zapping the existing SPTE if it's shadow-present. While commit a54aa15c6bda3 was right about...

UBUNTU-CVE-2026-23401

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE When installing an emulated MMIO SPTE, do so after dropping/zapping the existing SPTE if it's shadow-present. While commit a54aa15c6bda3 was right about...

CVE-2026-23402

CVE-2026-23402 affects the Linux kernel KVM MMU on x86. The issue arises when overwriting a shadow-present SPTE with a different PFN, where KVM’s sanity check could allow harmful state changes in direct MMUs (i.e., MMUs without shadowed gPTEs). The problem is tracked in KVM’s mmu_set_spte path, a...

CVE-2026-23402

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

CVE-2026-23401

CVE-2026-23401: In the Linux kernel KVM x86/mmu, a race allowed installing an MMIO SPTE without first zapping an existing shadow-present SPTE when guest memory writes occurred outside KVM’s scope. This could enable a guest‑memory–related fault to leave a shadow SPTE intact when an MMIO SPTE is in...

CVE-2026-23401

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE When installing an emulated MMIO SPTE, do so after dropping/zapping the existing SPTE if it's shadow-present. While commit a54aa15c6bda3 was right about...

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 fact that the existing SPTE was not deleted before installing the simulated MMIO SPTE,...

PT-2026-29485

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from improper checks during the processing of shadow memory when the direct MMU overwrites the SPTE. This...

Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50170)

The remote Oracle Linux 10 / 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-50170 advisory. 6.12.0-200.74.27.1 - KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE Sean Christopherson Orabug: 39071315 Tenable has extract...

SUSE-SU-2026:1092-1 Security update for xen

This update for xen fixes the following issues: - CVE-2026-23554: xen: Use after free of paging structures in EPT bsc1259247, XSA-480...

SUSE CVE-2026-23345

In the Linux kernel, the following vulnerability has been resolved: arm64: gcs: Do not set PTESHARED on GCS mappings if FEATLPA2 is enabled When FEATLPA2 is enabled, bits 8-9 of the PTE replace the shareability attribute with bits 50-51 of the output address. The PAGEGCS,RO definitions include th...

EUVD-2026-15312

In the Linux kernel, the following vulnerability has been resolved: arm64: gcs: Do not set PTESHARED on GCS mappings if FEATLPA2 is enabled When FEATLPA2 is enabled, bits 8-9 of the PTE replace the shareability attribute with bits 50-51 of the output address. The PAGEGCS,RO definitions include th...

CVE-2026-23346

In the Linux kernel, the following vulnerability has been resolved: arm64: io: Extract user memory type in ioremapprot The only caller of ioremapprot outside of the generic ioremap implementation is genericaccessphys, which passes a 'pgprott' value determined from the user mapping of the target...