CVE-2026-46076

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Raise UD if unhandled VMMCALL isn't intercepted by L1 Explicitly synthesize a UD for VMMCALL if L2 is active, L1 does NOT want to intercept VMMCALL, nestedsvml2tlbflushenabled is true, and the hypercall is something...

CVE-2026-45987

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Sync interrupt shadow to cached vmcb12 after VMRUN of L2 After VMRUN in guest mode, nestedsynccontrolfromvmcb02 syncs fields written by the CPU from vmcb02 to the cached vmcb12. This is because the cached vmcb12 is use...

CVE-2026-43315

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Remove a user-triggerable WARN on nestedsvmloadcr3 succeeding Drop the WARN in svmsetnestedstate on nestedsvmloadcr3 failing as it is trivially easy to trigger from userspace by modifying CPUID after loading CR3. E.g...

CVE-2026-43315 KVM: nSVM: Remove a user-triggerable WARN on nested_svm_load_cr3() succeeding

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Remove a user-triggerable WARN on nestedsvmloadcr3 succeeding Drop the WARN in svmsetnestedstate on nestedsvmloadcr3 failing as it is trivially easy to trigger from userspace by modifying CPUID after loading CR3. E.g...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Loads the TSC multiplier of L1 based on L1’s state, not L2’s state. When emulating a nested VM-Exit, the TSC multiplier of L1 is loaded if L1’s desired ratio does not match the current ratio. This does not occur if L1’...

SUSE CVE-2023-53663

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Check instead of asserting on nested TSC scaling support Check for nested TSC scaling support on nested SVM VMRUN instead of asserting that TSC scaling is exposed to L1 if L1's MSRAMD64TSCRATIO has diverged from KVM's...

CVE-2023-53663

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Check instead of asserting on nested TSC scaling support Check for nested TSC scaling support on nested SVM VMRUN instead of asserting that TSC scaling is exposed to L1 if L1's MSRAMD64TSCRATIO has diverged from KVM's...

CVE-2023-53208 KVM: nSVM: Load L1's TSC multiplier based on L1 state, not L2 state

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Load L1's TSC multiplier based on L1 state, not L2 state When emulating nested VM-Exit, load L1's TSC multiplier if L1's desired ratio doesn't match the current ratio, not if the ratio L1 is using for L2 diverges from...

Linux Distros Unpatched Vulnerability : CVE-2024-50115

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: nSVM: Ignore nCR34:0 when loading PDPTEs from memory Ignore nCR34:0 when loading PDPTEs from memory for nested SVM, as bits 4:0 of CR3 are ignored when PAE...

CVE-2024-50115

CVE-2024-50115 is a Linux kernel vulnerability affecting KVM nSVM where loading PDPTEs from memory incorrectly handles nCR3[4:0]. The issue can cause an out-of-bounds read if a target page is at the end of a memslot, due to not enforcing 32-byte alignment when PAE paging is used. The root cause i...

CVE-2024-50115 KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Ignore nCR34:0 when loading PDPTEs from memory Ignore nCR34:0 when loading PDPTEs from memory for nested SVM, as bits 4:0 of CR3 are ignored when PAE paging is used, and thus VMRUN doesn't enforce 32-byte alignment of...

ROS-20240812-16

Vulnerability of the dovccioctl function in the net/atm/ioctl.c module of the ATM Asynchronous Transfer Mode network protocol implementation of the Linux kernel is related to the reuse of a previously exploited ATM protocol. Asynchronous Transfer Mode kernel of the Linux operating system is relat...

ROS-20220207-01

Vulnerability in the implementation of the tipccryptokeyrcv function of the protocol for intra-cluster communication Transparent Inter-Process Communication TIPC of Linux kernel is related to insufficient input data verification when processing MSGCRYPTO messages. input data validation when...

UBUNTU-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...

PT-2021-4275 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.11.12 Description: The issue is related to a use-after-free vulnerability in the arch/x86/kvm/svm/nested.c component of the Linux kernel, specifically affecting AMD KVM guests. This vulnerability can be...