CVE-2023-0045

Linux における Spectre-BTI ユーザー空間緩和策の回避 これは作業中のドキュメントです。誤りがあると思われる場合や引用漏れがある場合は、フィードバックをお送りください。 バージョン 1.0 José Oliveira esoj Rodrigo Branco BSDaemon はじめに Spectre-BTI攻撃の成功率をテストした際、カーネルAPIを緩和策として使用したときに奇妙なパターンを検出しました^1。私たちのテストにより、Linuxカーネルが攻撃を正しく緩和できず、syscall後にプロセスが短時間露出したままになることが明らかになりました。...

Rocky Linux 8 [CIQ] Security Update: kernel-rt-debug-debuginfo / kernel-rt-debuginfo / etc Multiple Vulnerabilities (crlsa-2025_19932)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202519932 advisory. kernel: x86/vmscape: Add conditional IBPB mitigation CVE-2025-40300 kernel: mm: fix zswap writeback race condition CVE-2023-53178 kernel: fs: fix UAF/GPF...

CVE-2023-0045

LinuxにおけるSpectre-BTIユーザ空間緩和策の回避 これは作業中の文書です。誤りや引用漏れがあると思われる場合は、フィードバックをお送りください。 バージョン1.0 José Oliveira esoj Rodrigo Branco BSDaemon はじめに Spectre-BTI攻撃の成功率をテストしていたところ、カーネルAPIを緩和策として使用した際に奇妙なパターンを検出しました^1。私たちのテストでは、Linuxカーネルが攻撃を正しく緩和できず、システムコール後も短い期間プロセスが露出したままになることが明らかになりました。...

Siemens SIMATIC S7-1500 CPU 1518 MFP Resource Leak (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-93809 CVE-2026-64507 affecting package kernel for versions less than 6.6.145.2-1

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Enable IBPB flush on BPF JIT allocation Enable hardening against JIT spraying when Spectre-v2 mitigations are in use. Specifically, issue an IBPB flush on BPF JIT memory reuse. Skip enabling the IBPB flush if the BPF...

CVE-2026-64507

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Enable IBPB flush on BPF JIT allocation Enable hardening against JIT spraying when Spectre-v2 mitigations are in use. Specifically, issue an IBPB flush on BPF JIT memory reuse. Skip enabling the IBPB flush if the BPF...

CVE-2026-64507: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Enable IBPB flush on BPF JIT allocation Enable hardening against JIT spraying when Spectre-v2 mitigations are in use. Specifically, issue an IBPB flush on BPF JIT memory reuse. Skip enabling the IBPB flush if the BPF...

Security update for xen

This update for xen fixes the following issues: CVE-2025-58150: buffer overrun with shadow paging + tracing XSA-477 bsc1256745. CVE-2026-23553: incomplete IBPB for vCPU isolation XSA-479 bsc1256747. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like...

Updated xen packages fix security vulnerabilities

x86: buffer overrun with shadow paging + tracing. CVE-2025-58150 x86: incomplete IBPB for vCPU isolation. CVE-2026-23553...

Security update for xen

This update for xen fixes the following issues: Security fixes: CVE-2025-58150: Fixed buffer overrun with shadow paging and tracing XSA-477 bsc1256745 CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation XSA-479 bsc1256747 CVE-2025-58149: Fixed incorrect removal od permissions on PCI device...

CVE-2026-23553: Improper Initialization

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

MiracleLinux 7 : kernel-3.10.0-1160.119.1.0.6.el7.AXS7 (AXSA:2024-9046:38)

"The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-9046:38 advisory. net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink CVE-2024-44970 PCI: Add missing bridge lock to pcibuslock CVE-2024-46750 net/mlx5: Discard...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004182)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004182 advisory. A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB Indirect Branch Prediction Barrier. The IBPB mitigation will be disabl...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001770)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001770 advisory. The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ibprctlset function updates the Thread Information Flags...

MiracleLinux 9 : kernel-5.14.0-570.62.1.el9_6 (AXSA:2025-11101:89)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11101:89 advisory. kernel: information leak via transient execution vulnerability in some AMD processors CVE-2024-36350 kernel: transient execution vulnerability in...

MiracleLinux 9 : kernel-5.14.0-611.9.1.el9_7 (AXSA:2025-11506:95)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11506:95 advisory. kernel: firmware: armscpi: Ensure scpiinfo is not assigned if the probe fails CVE-2022-50087 kernel: sunrpc: fix client side handling of tls alerts...

RHEL 10 : kernel (RHSA-2026:0271)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:0271 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: x86/vmscape: Add conditional...

Moderate: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

Moderate: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service. Red Hat Product Security has rated this update as...