Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from hugetlbchangeprotection not properly handling PTE flags...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from not properly handling pte markers when forking...

UBUNTU-CVE-2022-49081

In the Linux kernel, the following vulnerability has been resolved: highmem: fix checks in kmaplocalschedin,out When CONFIGDEBUGKMAPLOCAL is enabled kmaplocalschedin,out check that even slots in the tsk-kmapctrl.pteval are unmapped. The slots are initialized with 0 value, but the check is done wi...

DEBIAN-CVE-2021-47640

In the Linux kernel, the following vulnerability has been resolved: powerpc/kasan: Fix early region not updated correctly The shadow's page table is not updated when PTERPNSHIFT is 24 and PAGESHIFT is 12. It not only causes false positives but also false negative as shown the following text. Fix ...

SUSE CVE-2025-21696

In the Linux kernel, the following vulnerability has been resolved: mm: clear uffd-wp PTE/PMD state on mremap When mremaping a memory region previously registered with userfaultfd as write-protected but without UFFDFEATUREEVENTREMAP, an inconsistency in flag clearing leads to a mismatch between t...

CVE-2025-21696 mm: clear uffd-wp PTE/PMD state on mremap()

In the Linux kernel, the following vulnerability has been resolved: mm: clear uffd-wp PTE/PMD state on mremap When mremaping a memory region previously registered with userfaultfd as write-protected but without UFFDFEATUREEVENTREMAP, an inconsistency in flag clearing leads to a mismatch between t...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from not clearing the uffd-wp PTE/PMD state during the mremap operation. An attacker exploiting this vulnerabilit...

CVE-2023-20582

Improper handling of invalid nested page table entries in the IOMMU may allow a privileged attacker to induce page table entry PTE faults to bypass RMP checks in SEV-SNP, potentially leading to a loss of guest memory integrity...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: drivers/virt/acrn: Fixed the PFNMAP PTE checks in acrnvmrammap. The patch series “mm: Improvements to followpte and fixes for acrn followpte”. Patch 1 fixes a number of issues I identified in the acrn driver. It’s just compile...

The vulnerability of the radix__set_pte_at() function in the arch/powerpc/include/asm/book3s/64/radix.h file of the Linux operating system’s kernel allows a malicious actor to cause a service failure.

The vulnerability of the radixsetpteat function in the arch/powerpc/include/asm/book3s/64/radix.h component of the Linux operating system’s kernel involves an uncontrolled consumption of resources. Exploiting this vulnerability could allow a attacker to cause a service failure...

AZL-54243 CVE-2024-53121 affecting package kernel for versions less than 5.15.176.3-1

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: fs, lock FTE when checking if active The referenced commits introduced a two-step process for deleting FTEs: - Lock the FTE, delete it from hardware, set the hardware deletion function to NULL and unlock the FTE. - Lock...

DEBIAN-CVE-2024-53121

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: fs, lock FTE when checking if active The referenced commits introduced a two-step process for deleting FTEs: - Lock the FTE, delete it from hardware, set the hardware deletion function to NULL and unlock the FTE. - Lock...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the active flag for FTEs in the net/mlx5 component not being checked by locking during deletion, causing the...

The vulnerability of the filemap_fault_recheck_pte_none() function in the Linux kernel’s memory management subsystem allows an attacker to compromise the integrity of protected information.

The vulnerability of the filemapfaultrecheckptenone function in the mm/filemap.c module of the Linux kernel’s memory management subsystem is related to the repeated use of previously freed memory due to competitive access to resources race condition. Exploiting this vulnerability could allow an...

kernel: x86/mm/pat: fix VM_PAT handling in COW mappings

CVE-2024-35877 pertains to a flaw in the Linux kernel's handling of Page Attribute Table PAT settings during Copy-On-Write COW operations. When a write operation triggers a COW event, the kernel may replace the original page table entries PTEs with anonymous folios. This replacement disrupts the...

kernel: powerpc/fixmap: Fix VM debug warning on unmap

In the Linux kernel, the following vulnerability has been resolved: powerpc/fixmap: Fix VM debug warning on unmap Unmapping a fixmap entry is done by calling setfixmap with FIXMAPPAGECLEAR as flags. Today, powerpc setfixmap calls mapkernelpage. mapkernelpage is not happy when called a second time...

KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status

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SUSE CVE-2021-47623

In the Linux kernel, the following vulnerability has been resolved: powerpc/fixmap: Fix VM debug warning on unmap Unmapping a fixmap entry is done by calling setfixmap with FIXMAPPAGECLEAR as flags. Today, powerpc setfixmap calls mapkernelpage. mapkernelpage is not happy when called a second time...

CVE-2024-40915

A flaw was found in the kernelmappages function in RISC-V in the Linux Kernel, which is incorrectly designed to sleep in atomic contexts. This function cleared the valid bit in page table entries for deallocated pages to detect illegal memory accesses, but it utilized setmemory, which acquires a...

DEBIAN-CVE-2021-47623

In the Linux kernel, the following vulnerability has been resolved: powerpc/fixmap: Fix VM debug warning on unmap Unmapping a fixmap entry is done by calling setfixmap with FIXMAPPAGECLEAR as flags. Today, powerpc setfixmap calls mapkernelpage. mapkernelpage is not happy when called a second time...