Important: kernel-livepatch-6.1.59-84.139

Issue Overview: x86: KVM: SVM: always update the x2avic msr interception CVE-2023-5090 A heap out-of-bounds write vulnerability in the Linux kernel's Linux Kernel Performance Events perf component can be exploited to achieve local privilege escalation. If perfreadgroup is called while an event's...

Mageia: Security Advisory (MGASA-2023-0331)

The remote host is missing an update for the SPDX-FileCopyrightText: 2023 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...

Updated kernel-linus packages fix security vulnerabilities

This kernel update is based on upstream 6.5.11 and fixes or adds mitigations for at least the following security issues: A use-after-free vulnerability was found in drivers/nvme/target/tcp.c in nvmettcpfreecrypto due to a logical bug in the NVMe-oF/TCP subsystem in the Linux kernel. This issue ma...

CVE-2023-5090

A flaw was found in KVM. An improper check in svmsetx2apicmsrinterception may allow direct access to host x2apic msrs when the guest resets its apic, potentially leading to a denial of service condition. Mitigation Mitigation for this issue is either not available or the currently available optio...

kernel security update

5.14.0-284.30.1.el92 - x86/microcode/intel: Expose collectcpuinfoearly for IFS - x86/cpu: Load microcode during restoreprocessorstate - x86/microcode: Rip out the OLDINTERFACE - x86/microcode: Default-disable late loading - x86/microcode: Taint and warn on late loading - x86/microcode: Remove...

kernel: KVM: VMX: Fix crash due to uninitialized current_vmcs

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Fix crash due to uninitialized currentvmcs KVM enables 'Enlightened VMCS' and 'Enlightened MSR Bitmap' when running as a nested hypervisor on top of Hyper-V. When MSR bitmap is updated, evmcstouchmsrbitmap function uses...

CVE-2023-0045

The CVE-2023-0045 entry concerns the Linux kernel Spectre v2 mitigation for prctl-based task toggling. The underlying issue is that IBPB is not issued immediately during the prctl syscall; ib_prctl_set updates TIFs and SPEC_CTRL MSR, but IBPB is only emitted on the next schedule after TIF checks....

CVE-2023-0045

The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ibprctlset function updates the Thread Information Flags TIFs for the task and updates the SPECCTRL MSR on the function speculationctrlupdate, but the IBPB is only issued on the next...

SUSE CVE-2013-0268

The msropen function in arch/x86/kernel/msr.c in the Linux kernel before 3.7.6 allows local users to bypass intended capability restrictions by executing a crafted application as root, as demonstrated by msr32.c...

SUSE CVE-2013-1797

Use-after-free vulnerability in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 allows guest OS users to cause a denial of service host OS memory corruption or possibly have unspecified other impact via a crafted application that triggers use of a guest physical address GPA in 1 movable or 2...

SUSE CVE-2014-7188

The hvmmsrreadintercept function in arch/x86/hvm/hvm.c in Xen 4.1 through 4.4.x uses an improper MSR range for x2APIC emulation, which allows local HVM guests to cause a denial of service host crash or read data from the hypervisor or other guests via unspecified vectors...

SUSE CVE-2018-5244

In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn't freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service host OS memory consumption by rebooting many...

SUSE CVE-2018-15468

An issue was discovered in Xen through 4.11.x. The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the...

SUSE CVE-2019-15031

In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via an interrupt. To exploit the venerability, a local user starts a transaction via the hardware transactional memory instruction tbegin and then accesses vector registers...

SUSE CVE-2020-25602

An issue was discovered in Xen through 4.14.x. An x86 PV guest can trigger a host OS crash when handling guest access to MSRMISCENABLE. When a guest accesses certain Model Specific Registers, Xen first reads the value from hardware to use as the basis for auditing the guest access. For the...

SUSE CVE-2021-29657

arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in...

USN-5617-1: Xen vulnerabilities

It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use th...

GSD-2022-1004979 powerpc/rtas: Fix RTAS MSR[HV] handling for Cell

powerpc/rtas: Fix RTAS MSRHV handling for Cell This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.19.8 by commit...

PT-2025-25881

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.0.0-rc2-00433-gede0a8d3307a Description A vulnerability in the Linux kernel has been resolved, related to the handling of MSRHV when entering RTAS firmware on IBM Cell machines. This issue caused crashes due to...

GSD-2022-1003351 powerpc/rtas: Keep MSR[RI] set when calling RTAS

powerpc/rtas: Keep MSRRI set when calling RTAS This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.46 by commit...