CVE-2023-0045

Bypassing Spectre-BTI User Space Mitigations on Linux This is a working document, please send us feedback if you think we got something wrong or if we missed a citation Version 1.0 José Oliveira esoj Rodrigo Branco BSDaemon Introduction When testing the success rate of Spectre-BTI attacks, we...

CVE-2023-0045

Bypassing Spectre-BTI User Space Mitigations on Linux This is a working document, please send us feedback if you think we got something wrong or if we missed a citation Version 1.0 José Oliveira esoj Rodrigo Branco BSDaemon Introduction When testing the success rate of Spectre-BTI attacks, we...

Astra Linux – vulnerability in linux-6.1, linux-6.12, linux-6.18

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...

RHEL 9 : kernel (RHSA-2026:89890)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:89890 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: bpf: Support for hardening...

RHEL 10 : kernel (RHSA-2026:91648)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:91648 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: bpf: Support for hardening...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. 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 available for...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. 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 available for...

CLSA-2023-1686651204 kernel: Fix of 28 CVEs

cgroup: Use open-time cgroup namespace for process migration perm checks CVE-2021-4197 - cgroup: Use open-time credentials for process migraton perm checks CVE-2021-4197 - vt: drop old FONT ioctls CVE-2021-33656 - fbmem: Check virtual screen sizes in fbsetvar CVE-2021-33655 - fbcon: Prevent that...

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...

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...

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

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 ...

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...