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 the function kvmvcpuinitnested. This function reallocates and releases the kvm-arch.nestedmmus...

CVE-2026-31558 LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Make kvmgetvcpubycpuid more robust kvmgetvcpubycpuid takes a cpuid parameter whose type is int, so cpuid can be negative. Let kvmgetvcpubycpuid return NULL for this case so as to make it more robust. This fix an...

ROS-20260313-73-0025

A vulnerability in the kvmvmioctlcreatevcpu function of the Linux operating system kernel is caused by a race condition. Exploitation of the vulnerability may allow an attacker to cause a denial of service...

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...

ROS-20260113-7314

A vulnerability in the kvmarchvcpuioctl function of the arch/x86/kvm/x86.c module of the Linux operating system kernel is related to synchronization errors when using a shared resource. Exploitation of the vulnerability may allow an attacker to affect confidentiality, integrity and availability o...

TencentOS Server 4: kernel (TSSA-2025:0430)

"The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0430 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilitie...

OESA-2025-1648 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: scsi: target: Fix WRITESAME No Data Buffer crash In newer version of the SBC specs, we have a NDOB bit that indicates there is no data buffer that gets written...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security bugfixes. The following security bugs were fixed: CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF bsc1237918. CVE-2022-49465: blk-throttle: Set BIOTHROTTLED when bio has been throttled bsc1238919...

UBUNTU-CVE-2024-58083

In the Linux kernel, the following vulnerability has been resolved: KVM: Explicitly verify target vCPU is online in kvmgetvcpu Explicitly verify the target vCPU is fully online prior to clamping the index in kvmgetvcpu. If the index is "bad", the nospec clamping will generate '0', i.e. KVM will...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: iommu: Return right value in iommusvabinddevice CVE-2024-40945 In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix bfqq uaf in bfqlimitdepth CVE-2024-53166 In the Linux kernel, the...

Linux Distros Unpatched Vulnerability : CVE-2024-53195

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: arm64: Get rid of userspaceirqchipinuse Improper use of userspaceirqchipinuse led to syzbot hitting the following WARNON in kvmtimerupdateirq: WARNING: CP...

Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security bugfixes. The following security bugs were fixed: CVE-2022-48742: rtnetlink: make sure to refresh masterdev/mops in rtnlnewlink bsc1226694. CVE-2022-49033: btrfs: qgroup: fix sleep from invalid context bug in...

PT-2024-32764

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.11-rc3 Description A NULL pointer crash is observed when SBI PMU snapshot is enabled for the guest and the guest is forcefully powered-off. The kvm vcpu write guest function is crashing because it is being call...

PT-2024-29171

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A data race vulnerability has been resolved in the Linux kernel's KVM module. The issue occurred in the kvm vcpu on spin function, where a data race on last boosted vcpu could potentiall...

SUSE CVE-2016-3713

The msrmtrrvalid function in arch/x86/kvm/mtrr.c in the Linux kernel before 4.6.1 supports MSR 0x2f8, which allows guest OS users to read or write to the kvmarchvcpu data structure, and consequently obtain sensitive information or cause a denial of service system crash, via a crafted ioctl call...

PT-2023-2015

Name of the Vulnerable Software and Affected Versions KVM affected versions not specified Description A flaw was found in KVM that could cause an information leak when calling the KVM GET DEBUGREGS ioctl on 32-bit systems. This issue is related to uninitialized portions of the kvm debugregs...

PT-2022-1376

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.18.17 Description An issue in the x86 KVM subsystem of the Linux kernel allows unprivileged guest users to compromise the guest kernel due to mishandled TLB flush operations in certain KVM VCPU PREEMPTED...

kernel: security and bugfix update (important)

The Linux kernel was updated to fix various bugs and security issues: - mm/page-writeback.c: do not count anon pages as dirtyable memory reclaim stalls. - mm/page-writeback.c: fix dirtybalancereserve subtraction from dirtyable memory reclaim stalls. - compatsysrecvmmsg X32 fix bnc860993...

kvm: x86: zero kvm_vcpu_events->interrupt.pad infoleak

Linux kernel 2.6.33 and 2.6.34.y does not initialize the kvmvcpuevents-interrupt.pad structure member, which allows local users to obtain potentially sensitive information from kernel stack memory via unspecified vectors...