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...

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 setting PTESHARED in the GCS mapping when FEATLPA2 is enabled, potentially leading to kernel...

PT-2026-27710

In the Linux kernel, the following vulnerability has been resolved: arm64: gcs: Do not set PTE SHARED on GCS mappings if FEAT LPA2 is enabled When FEAT LPA2 is enabled, bits 8-9 of the PTE replace the shareability attribute with bits 50-51 of the output address. The PAGE GCS, RO definitions inclu...

CVE-2026-23554

A flaw was found in Xen. An optimization in the Intel Extended Page Table EPT paging code, used by Xen, defers flushing cached EPT state. However, the freeing of paging structures is not similarly deferred. This can result in freed memory pages remaining in the cached state, allowing stale entrie...

ALPINE-CVE-2026-23554

The Intel EPT paging code uses an optimization to defer flushing of any cached EPT state until the p2m lock is dropped, so that multiple modifications done under the same locked region only issue a single flush. Freeing of paging structures however is not deferred until the flushing is done, and...

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 CVE-2026-23555: xen: Xenstored DoS by unprivileged domain bsc1259248, XSA-481 Patch Instructions: To install this SUSE update use the SUSE recommended installation...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: iommu/io-pgtable-arm: fix sizet signedness bug in unmap path armlpaeunmap returns sizet but was returning -ENOENT negative error code when encountering an unmapped PTE. Since sizet is unsigned, -ENOENT typically -2 becomes a huge...

PT-2026-30181

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.0.0-rc1-00116-g018018a17770 Description A flaw was discovered in the Linux kernel's mm/rmap subsystem related to the restoration of page table entries PTEs for lazyfree folios. Specifically, when batch unmappin...

UBUNTU-CVE-2026-23097

In the Linux kernel, the following vulnerability has been resolved: migrate: correct lock ordering for hugetlb file folios Syzbot has found a deadlock analyzed by Lance Yang: 1 Task 5749: Holds foliolock, then tries to acquire immaprwsemread lock. 2 Task 5754: Holds immaprwsemwrite lock, then tri...

CVE-2026-23100 mm/hugetlb: fix hugetlb_pmd_shared()

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...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: independent PMD page table shared count The refcount may be unexpectedly increased through functions like trygetfolio, especially when called by functions like splithugepages. In hugepmdunshare, we use the refcount t...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: x86/mm/64: Defined ARCHPAGETABLESYNCMASK and archsynckernelmappings. These definitions ensure that page tables are properly synchronized when calling pdpopulatekernel. For 5-level paging, synchronization is performed via...

Astra Linux – Vulnerability in Linux 6.1

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...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm/debugvmpgtable: clear page table entries at destroyargs The mm/debugvmpagetable test allocates manually page table entries for the tests it runs, using also its manually allocated mmstruct. That in itself is ok, but when it...

Azure Linux 3.0 Security Update: kernel (CVE-2025-22045)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-22045 advisory. - In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix flushtlbrange when used for...

Azure Linux 3.0 Security Update: hyperv-daemons (CVE-2024-26990)

The version of hyperv-daemons installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-26990 advisory. - In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Write-protect L2...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004168)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004168 advisory. An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions expanddownwards and expandupwards...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000953)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000953 advisory. The fork implementation in the Linux kernel before 4.5 on s390 platforms mishandles the case of four page- table levels, which allows local users to cause a denial o...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004121)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004121 advisory. In the Linux kernel 4.19 through 5.6.7 on the s390 platform, code execution may occur because of a race condition, as demonstrated by code in enablesacfuaccess in...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002361)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002361 advisory. The trytounmapcluster function in mm/rmap.c in the Linux kernel before 3.14.3 does not properly consider which pages must be locked, which allows local users to caus...