kernel: KVM: Always flush async #PF workqueue when vCPU is being destroyed

In the Linux kernel, the following vulnerability has been resolved: KVM: Always flush async PF workqueue when vCPU is being destroyed Always flush the per-vCPU async PF workqueue when a vCPU is clearing its completion queue, e.g. when a VM and all its vCPUs is being destroyed. KVM must ensure tha...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the KVM module failing to properly handle the high 5 bits of the CR3 register when loading the PDPTEs of a...

DEBIAN-CVE-2024-47744

In the Linux kernel, the following vulnerability has been resolved: KVM: Use dedicated mutex to protect kvmusagecount to avoid deadlock Use a dedicated mutex to guard kvmusagecount to fix a potential deadlock on x86 due to a chain of locks and SRCU synchronizations. Translating the below lockdep...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the use of kvmusagecount in KVM without the use of a dedicated mutex lock, which could lead to a potential...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from a failure to clear the PMU snapshot area before releasing data in RISC-V KVM, which could result in a null point...

CVE-2024-46707

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CLSA-2024-1727816710 Fix of 60 CVEs

CVE-url: https://ubuntu.com/security/CVE-2024-26752 - l2tp: pass correct message length to ip6appenddata CVE-url: https://ubuntu.com/security/CVE-2023-52527 - ipv4, ipv6: Fix handling of transhdrlen in ip,6appenddata CVE-url: https://ubuntu.com/security/CVE-2024-43882 - exec: Fix ToCToU between...

CLSA-2024-1727816002 Fix of 60 CVEs

CVE-url: https://ubuntu.com/security/CVE-2024-26752 - l2tp: pass correct message length to ip6appenddata CVE-url: https://ubuntu.com/security/CVE-2023-52527 - ipv4, ipv6: Fix handling of transhdrlen in ip,6appenddata CVE-url: https://ubuntu.com/security/CVE-2024-43882 - exec: Fix ToCToU between...

UBUNTU-CVE-2024-46830

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire kvm-srcu when handling KVMSETVCPUEVENTS Grab kvm-srcu when processing KVMSETVCPUEVENTS, as KVM will forcibly leave nested VMX/SVM if SMM mode is being toggled, and leaving nested VMX reads guest memory. Note,...

Vulnerability of the arch/x86/kvm/x86.c component and lapic_shutdown within the Kernel-Based Virtual Machine (KVM) virtualization subsystem of the Linux operating system, which allows a hacker to trigger a service failure.

The vulnerability in the arch/x86/kvm/x86.c component of the KVM kernel-based virtualization subsystem in Linux operating systems is related to the disabling of the tsc-deadline mode and the execution of a reboot in the guest system. Exploiting this vulnerability can allow an attacker to cause a...

SUSE CVE-2024-45005

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: fix validity interception issue when gisa is switched off We might run into a SIE validity if gisa has been disabled either via using kernel parameter "kvm.usegisa=0" or by setting the related sysfs attribute to N echo...

DEBIAN-CVE-2022-48943

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: make apf token non-zero to fix bug In current async pagefault logic, when a page is ready, KVM relies on kvmarchcandequeueasyncpagepresent to determine whether to deliver a READY event to the Guest. This function te...

kernel: KVM: s390: vsie: fix race during shadow creation

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: fix race during shadow creation Right now it is possible to see gmap-private being zero in kvms390vsiegmapnotifier resulting in a crash. This is due to the fact that we add gmap-private == kvm after creation:...

UBUNTU-CVE-2022-48793

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: nSVM: fix potential NULL derefernce on nested migration Turns out that due to review feedback and/or rebases I accidentally moved the call to nestedsvmloadcr3 to be too early, before the NPT is enabled, which is very...

DEBIAN-CVE-2024-40989

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Disassociate vcpus from redistributor region on teardown When tearing down a redistributor region, make sure we don't have any dangling pointer to that region stored in a vcpu...

DEBIAN-CVE-2024-40953

In the Linux kernel, the following vulnerability has been resolved: KVM: Fix a data race on lastboostedvcpu in kvmvcpuonspin Use READ,WRITEONCE to access kvm-lastboostedvcpu to ensure the loads and stores are atomic. In the extremely unlikely scenario the compiler tears the stores, it's...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by the Linux Foundation's open source operating system Linux. A security vulnerability exists in the Linux kernel that stems from a data contention issue in the kvmvcpuonspin function of the KVM virtualization component...

CLSA-2024-1720468480 kernel: Fix of 89 CVEs

kvm: initialize all of the kvmdebugregs structure before sending it to userspace CVE-2023-1513 - wifi: mac80211: fix MBSSID parsing use-after-free CVE-2022-42719 - mac80211: always allocate struct ieee80211elems CVE-2022-42719 - netfilter: nftables: initialize registers in nftdochain...

kernel: KVM: SVM: improper check in svm_set_x2apic_msr_interception allows direct access to host x2apic msrs

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...

kernel: KVM: SVM: improper check in svm_set_x2apic_msr_interception allows direct access to host x2apic msrs

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...