Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: rvc: Sparse-Memory/vmemmap out-of-bounds fix The offset of vmemmap has been adjusted so that the first page of vmemmap is mapped to the first page of physical memory. This ensures that the bounds of vmemmap are respected durin...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: fixed a deadlock that occurred when hugetlboptimizevmemmap was enabled. When I performed hard offline tests with hugetlb pages, a deadlock occurred as follows:...

SUSE CVE-2026-43348

In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via MSHVADDVTL0MEMORY, the kernel computes pgmap-vmemmapshift as the number of trailing zeros in the OR of startpfn and lastpfn, intending to use the...

EUVD-2026-28632

In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via MSHVADDVTL0MEMORY, the kernel computes pgmap-vmemmapshift as the number of trailing zeros in the OR of startpfn and lastpfn, intending to use the...

CVE-2026-43348

In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via MSHVADDVTL0MEMORY, the kernel computes pgmap-vmemmapshift as the number of trailing zeros in the OR of startpfn and lastpfn, intending to use the...

UBUNTU-CVE-2026-43348

In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via MSHVADDVTL0MEMORY, the kernel computes pgmap-vmemmapshift as the number of trailing zeros in the OR of startpfn and lastpfn, intending to use the...

CVE-2026-43348

The CVE-2026-43348 issue affects the Linux kernel’s mshv_vtl path: when registering VTL0 memory via MSHV_ADD_VTL0_MEMORY, the calculation of pgmap->vmemmap_shift can exceed MAX_FOLIO_ORDER, causing a WARN and -EINVAL during memremap_pages(). The root cause is failing to clamp the computed shif...

CVE-2026-43348 mshv_vtl: Fix vmemmap_shift exceeding MAX_FOLIO_ORDER

In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via MSHVADDVTL0MEMORY, the kernel computes pgmap-vmemmapshift as the number of trailing zeros in the OR of startpfn and lastpfn, intending to use the...

CVE-2026-43348

In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via MSHVADDVTL0MEMORY, the kernel computes pgmap-vmemmapshift as the number of trailing zeros in the OR of startpfn and lastpfn, intending to use the...

CVE-2026-43348 mshv_vtl: Fix vmemmap_shift exceeding MAX_FOLIO_ORDER

In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via MSHVADDVTL0MEMORY, the kernel computes pgmap-vmemmapshift as the number of trailing zeros in the OR of startpfn and lastpfn, intending to use the...

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 calculation of vmemmapshift in mshvvtl. This calculation does not limit the value to...

PT-2026-38999

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the mshv vtl component when registering VTL0 memory via 'MSHV ADD VTL0 MEMORY'. The kernel calculates pgmap-vmemmap shift based on the trailing zeros of start pfn and...

Linux Distros Unpatched Vulnerability : CVE-2026-43348

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013684)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013684 advisory. In the Linux kernel, the following vulnerability has been resolved: bootmem: remove the vmemmap pages from kmemleak in putpagebootmem The vmemmap pages is marked by...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-011027)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011027 advisory. In the Linux kernel, the following vulnerability has been resolved: bootmem: remove the vmemmap pages from kmemleak in putpagebootmem The vmemmap pages is marked by...

UBUNTU-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...

Azure Linux 3.0 Security Update: kernel (CVE-2025-37922)

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-2025-37922 advisory. - In the Linux kernel, the following vulnerability has been resolved: book3s64/radix : Align section vmemmap...

Azure Linux 3.0 Security Update: hyperv-daemons / kernel (CVE-2024-26987)

"The version of hyperv-daemons / 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-2024-26987 advisory. - In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: fix...

CVE-2025-68179

In the Linux kernel, the following vulnerability has been resolved: s390: Disable ARCHWANTOPTIMIZEHUGETLBVMEMMAP As reported by Luiz Capitulino enabling HVO on s390 leads to reproducible crashes. The problem is that kernel page tables are modified without flushing corresponding TLB entries. Even ...

UBUNTU-CVE-2025-68179

In the Linux kernel, the following vulnerability has been resolved: s390: Disable ARCHWANTOPTIMIZEHUGETLBVMEMMAP As reported by Luiz Capitulino enabling HVO on s390 leads to reproducible crashes. The problem is that kernel page tables are modified without flushing corresponding TLB entries. Even ...