Linux Distros Unpatched Vulnerability : CVE-2025-40300

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: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits...

Fedora 41 : kernel (2025-4f0872847c)

The remote Fedora 41 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-4f0872847c advisory. The 6.16.7 stable kernel updates contain mitigation for the VMSCAPE vulnerability on x86 CPUs. This has been assigned CVE-2025-40300 Tenable has extracted th...

[slackware-security] kernel

New kernel packages are available for Slackware 15.0 to fix security issues. Here are the details from the Slackware 15.0 ChangeLog: patches/packages/kernel-firmware-20250912f0f4634-noarch-1.txz: Upgraded. patches/packages/linux-5.15.193/kernel-generic-5.15.193-i586-1.txz: Upgraded...

Fedora 42 : kernel (2025-4c1d09a51b)

The remote Fedora 42 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-4c1d09a51b advisory. The 6.16.7 stable kernel updates contain mitigation for the VMSCAPE vulnerability on x86 CPUs. This has been assigned CVE-2025-40300 ---- The 6.16.6 stable...

Fedora: Security Advisory (FEDORA-2025-4c1d09a51b)

The remote host is missing an update for the SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

SUSE CVE-2025-40300

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

CVE-2025-40300

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

AZL-67238 CVE-2025-40300 affecting package kernel for versions less than 6.6.112.1-1

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

DEBIAN-CVE-2025-40300

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

AZL-74763 CVE-2025-40300 affecting package kernel for versions less than 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

UBUNTU-CVE-2025-40300

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

CVE-2025-40300 x86/vmscape: Add conditional IBPB mitigation

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

CVE-2025-40300

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

CVE-2025-40300 x86/vmscape: Add conditional IBPB mitigation

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

CVE-2025-40300

The CVE-2025-40300 issue affects the Linux kernel’s x86/vmscape mitigation. The vulnerability arises from insufficient branch predictor isolation between a guest and a userspace hypervisor, which is mitigated by conditionally issuing an IBPB after VMexit and before returning to userspace. The fix...

Unbreakable Enterprise kernel security update

5.15.0-312.187.5.1 - x86/vmscape: Warn when STIBP is disabled with SMT Pawan Gupta Orabug: 38343660 - x86/bugs: Move cpubugssmtupdate down Pawan Gupta Orabug: 38343660 - x86/vmscape: Enable the mitigation Pawan Gupta Orabug: 38343660 - x86/vmscape: Add conditional IBPB mitigation Pawan Gupta...