SUSE SLES12: xen / xen-devel / xen-doc-html / xen-libs / xen-libs-32bit / etc (SUSE-SU-2026:3451-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3451-1 advisory. This update for xen fixes the following issues - CVE-2026-42493: x86 shadow paging is deprecated bsc1271528. -...

SUSE SLES15: xen / xen-devel / xen-libs / xen-tools / xen-tools-domU / etc (SUSE-SU-2026:3409-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3409-1 advisory. This update for xen fixes the following issues - CVE-2026-42493: x86 shadow paging is deprecated bsc1271528. -...

CVE-2026-62433 correct buffer checks for DM_OP hypercalls

Parts of the DMOP handling code assumes the caller has provided the required number of buffers for the given operation without any checking being done. As a result, certain operations might access stack rubble as structures are possibly uninitialized...

CVE-2026-62433

The Xen hypervisor is vulnerable to an issue where parts of the DM_OP handling code fail to verify that the caller provided the required number of buffers for a given operation. This lack of checking can cause certain operations to access uninitialized stack rubbish . Practical consequences of th...

correct buffer checks for DM_OP hypercalls

ISSUE DESCRIPTION Parts of the DMOP handling code assumes the caller has provided the required number of buffers for the given operation without any checking being done. As a result, certain operations might access stack rubble as structures are possibly uninitialized. IMPACT A device model of a...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: KVM: x86 – Check for nEPT/nNPT in slow flush hypercalls The check for isguestmodevcpus is incorrect, because the translatenestedgpa function is only valid if a L2 guest is running with nested EPT/NPT enabled. Instead, use the...

KVM: x86: check for nEPT/nNPT in slow flush hypercalls

...

SUSE CVE-2026-46131

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

CVE-2026-46131

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine x86 virtualization module. An incorrect check for nested EPT/NPT Nested Extended Page Tables/Nested Nested Page Tables in slow flush hypercalls could lead to improper handling of L2 guests. This vulnerability arises because t...

CVE-2026-46131

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

UBUNTU-CVE-2026-46131

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

CVE-2026-46131 KVM: x86: check for nEPT/nNPT in slow flush hypercalls

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

CVE-2026-46131

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

CVE-2026-46131

CVE-2026-46131 affects the Linux kernel KVM x86 code. The issue is a faulty check in slow flush hypercalls where is_guest_mode(vcpu) was used incorrectly; translate_nested_gpa() is only valid when an L2 guest runs with nested EPT/NPT enabled, so the condition should match translate_nested_gpa() i...

CVE-2026-46131 KVM: x86: check for nEPT/nNPT in slow flush hypercalls

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking isguestmodevcpu is incorrect, because translatenestedgpa is only valid if an L2 guest is running with nested EPT/NPT enabled. Instead use the same condition as...

PT-2026-43943

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM nSVM component where a VMMCALL is not properly handled when L2 is active, L1 does not want to intercept the VMMCALL, nested svm l2 tlb flush enabled is true, a...

CVE-2026-31788

A flaw was found in the Linux kernel's Xen privcmd driver. This vulnerability allows a root user process within an unprivileged guest domU to issue arbitrary hypercalls. Such an action could enable the process to modify the kernel's memory, thereby undermining the secure boot feature designed to...

CVE-2026-31788

In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: restrict usage in unprivileged domU The Xen privcmd driver allows to issue arbitrary hypercalls from user space processes. This is normally no problem, as access is usually limited to root and the hypervisor will den...

UBUNTU-CVE-2026-31788

In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: restrict usage in unprivileged domU The Xen privcmd driver allows to issue arbitrary hypercalls from user space processes. This is normally no problem, as access is usually limited to root and the hypervisor will den...

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 hypercalls disrupting the register state, potentially leading to page faults...