CVE-2022-49882 KVM: Reject attempts to consume or refresh inactive gfn_to_pfn_cache

In the Linux kernel, the following vulnerability has been resolved: KVM: Reject attempts to consume or refresh inactive gfntopfncache Reject kvmgpccheck and kvmgpcrefresh if the cache is inactive. Not checking the active flag during refresh is particularly egregious, as KVM can end up with a vali...

CVE-2022-49882 KVM: Reject attempts to consume or refresh inactive gfn_to_pfn_cache

In the Linux kernel, the following vulnerability has been resolved: KVM: Reject attempts to consume or refresh inactive gfntopfncache Reject kvmgpccheck and kvmgpcrefresh if the cache is inactive. Not checking the active flag during refresh is particularly egregious, as KVM can end up with a vali...

CVE-2022-49883

CVE-2022-49883 is a Linux kernel KVM x86 vulnerability related to SMM handling. The issue arises because the number of general purpose registers (GPRs) used for the SMRAM image depends on the image format. On 64‑bit hosts, if the guest lacks X86_FEATURE_LM, KVM may access 16 GPRs for a 32‑bit SMR...

CVE-2022-49882

In the Linux kernel, the following vulnerability has been resolved: KVM: Reject attempts to consume or refresh inactive gfntopfncache Reject kvmgpccheck and kvmgpcrefresh if the cache is inactive. Not checking the active flag during refresh is particularly egregious, as KVM can end up with a vali...

CVE-2022-49883

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format On 64 bit host, if the guest doesn't have X86FEATURELM, KVM will access 16 gprs to 32-bit smram image, causing out-ouf-bound ram access. On 32 bit host,...

CVE-2022-49883 KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format On 64 bit host, if the guest doesn't have X86FEATURELM, KVM will access 16 gprs to 32-bit smram image, causing out-ouf-bound ram access. On 32 bit host,...

CVE-2022-49774

CVE-2022-49774 affects the Linux kernel (KVM: x86/xen) and concerns eventfd error handling in kvm_xen_eventfd_assign(). The root cause was calling eventfd_ctx_put() on error; a patch introduces a new goto target to handle the error instead. The documents confirm the fix has been applied and refer...

CVE-2022-49774 KVM: x86/xen: Fix eventfd error handling in kvm_xen_eventfd_assign()

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix eventfd error handling in kvmxeneventfdassign Should not call eventfdctxput in case of error. Introduce new goto target instead. - Paolo...

CVE-2022-49774 KVM: x86/xen: Fix eventfd error handling in kvm_xen_eventfd_assign()

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix eventfd error handling in kvmxeneventfdassign Should not call eventfdctxput in case of error. Introduce new goto target instead. - Paolo...

CVE-2022-49774

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix eventfd error handling in kvmxeneventfdassign Should not call eventfdctxput in case of error. Introduce new goto target instead. - Paolo...

CVE-2025-23141

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire SRCU in KVMGETMPSTATE to protect guest memory accesses Acquire a lock on kvm-srcu when userspace is getting MP state to handle a rather extreme edge case where "accepting" APIC events, i.e. processing pending IN...

AZL-69662 CVE-2025-23141 affecting package kernel 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire SRCU in KVMGETMPSTATE to protect guest memory accesses Acquire a lock on kvm-srcu when userspace is getting MP state to handle a rather extreme edge case where "accepting" APIC events, i.e. processing pending IN...

CVE-2025-23141 KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire SRCU in KVMGETMPSTATE to protect guest memory accesses Acquire a lock on kvm-srcu when userspace is getting MP state to handle a rather extreme edge case where "accepting" APIC events, i.e. processing pending IN...

CVE-2025-23141

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire SRCU in KVMGETMPSTATE to protect guest memory accesses Acquire a lock on kvm-srcu when userspace is getting MP state to handle a rather extreme edge case where "accepting" APIC events, i.e. processing pending IN...

CVE-2025-23141 KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Acquire SRCU in KVMGETMPSTATE to protect guest memory accesses Acquire a lock on kvm-srcu when userspace is getting MP state to handle a rather extreme edge case where "accepting" APIC events, i.e. processing pending IN...

PT-2025-18599 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A vulnerability in the Linux kernel has been resolved, related to the KVM Kernel-based Virtual Machine component. The issue arises when the gfn to pfn cache is inactive, and KVM fails ...

PT-2025-18491 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A vulnerability has been resolved in the Linux kernel related to KVM: x86/xen. The issue concerns the handling of eventfd errors in the kvm xen eventfd assign function. Specifically,...

PT-2025-18601 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A vulnerability in the Linux kernel has been resolved, related to the KVM Kernel-based Virtual Machine component. The issue involves the initialization of locks in the gfn to pfn cache...

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 KVMGETMPSTATE not acquiring an SRCU lock, which could lead to access to unprotected memory...

PT-2025-18600 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The issue is related to the KVM Kernel-based Virtual Machine on x86 systems, specifically with the SMRAM System Management RAM image. On a 64-bit host, if the guest does not have the X...