Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mm/rmap: A potential out-of-bounds access to the page table occurred during batched unmap operations. As pointed out by David1, the batched unmap logic in trytounmapone may read past the end of a PTE table when the PTE mappings o...

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: x86/mm: Fixed the flushtlbrange function when it is used to zap normal PMD entries PMD entries that point to page tables, along with the PTE entries in the pointed-to page table. In the arm64 version of flushtlbrange, there is a...

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 competition between the splitting of PUD entries and the concurrent reassembly process in the...

PT-2026-34361

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix race between concurrent split and refault The splitting of a PUD entry in walk pud range can race with a concurrent thread refaulting the PUD leaf entry causing it to try walking a PMD range that has disappeared...

CVE-2026-23100

In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix hugetlbpmdshared Patch series "mm/hugetlb: fixes for PMD table sharing incl. using mmugather", v3. One functional fix, one performance regression fix, and two related comment fixes. I cleaned up my prototype I...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000545)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000545 advisory. The Linux Kernel versions 2.6.38 through 4.14 have a problematic use of pmdmkdirty in the touchpmd function inside the THP implementation. touchpmd can be reached by...

kernel: x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs

In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix flushtlbrange when used for zapping normal PMDs On the following path, flushtlbrange can be used for zapping normal PMD entries PMD entries that point to page tables together with the PTE entries in the pointed-to pag...

CVE-2023-53361

CVE-2023-53361 affects the Linux kernel on LoongArch where pmd_leaf() was not defined, causing a panic in ksm06 during LTP tests (Huge page pmd to pte_present). The issue is resolved by adding LoongArch-specific p?d_leaf() definitions (as per commits referenced in the CVE description). The connec...

UBUNTU-CVE-2025-39775

In the Linux kernel, the following vulnerability has been resolved: mm/mremap: fix WARN with uffd that has remap events disabled Registering userfaultd on a VMA that spans at least one PMD and then mremap'ing that VMA can trigger a WARN when recovering from a failed page table move due to a page...

LoongArch: Set hugetlb mmap base address aligned with pmd size

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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 improper handling of migrated PMD entries, which could lead to a crash...

mm/huge_memory: fix dereferencing invalid pmd migration entry

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UBUNTU-CVE-2025-37958

In the Linux kernel, the following vulnerability has been resolved: mm/hugememory: fix dereferencing invalid pmd migration entry When migrating a THP, concurrent access to the PMD migration entry during a deferred split scan can lead to an invalid address access, as illustrated below. To prevent...

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 Linux kernel that stems from not properly checking PMD migration entries, which could lead to invalid address access...

SUSE CVE-2025-22045

In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix flushtlbrange when used for zapping normal PMDs On the following path, flushtlbrange can be used for zapping normal PMD entries PMD entries that point to page tables together with the PTE entries in the pointed-to pag...

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 Linux kernel that stems from improper behavior of flushtlbrange when clearing common PMD entries...

CVE-2025-21949 LoongArch: Set hugetlb mmap base address aligned with pmd size

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Set hugetlb mmap base address aligned with pmd size With ltp test case "testcases/bin/hugefork02", there is a dmesg error report message such as: kernel BUG at mm/hugetlb.c:5550! Oops - BUG1: CPU: 0 UID: 0 PID: 1517...

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 mm/MADVCOLLAPSE component not properly handling non-none non-huge non-bad cases when looking up pmd...

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...

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...