CVE-2026-23401

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE When installing an emulated MMIO SPTE, do so after dropping/zapping the existing SPTE if it's shadow-present. While commit a54aa15c6bda3 was right about...

CVE-2026-23402

CVE-2026-23402 affects the Linux kernel KVM MMU on x86. The issue arises when overwriting a shadow-present SPTE with a different PFN, where KVM’s sanity check could allow harmful state changes in direct MMUs (i.e., MMUs without shadowed gPTEs). The problem is tracked in KVM’s mmu_set_spte path, a...

PT-2026-29484

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.0.0-rc2-eafebd2d2ab0-sink-vm 319 Description A flaw was discovered in the Linux kernel's KVM component related to the handling of shadow-present SPTEs Stale Page Table Entries during the installation of emulate...

CVE-2025-0029

Improper handling of error condition during host-induced faults can allow a local high-privileged attack to selectively drop guest DMA writes, potentially resulting in a loss of SEV-SNP guest memory integrity...

Buffer overflow

An issue was discovered in QEMU 7.1.0 through 8.2.1. registervfs in hw/pci/pciesriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF implementations...

SUSE CVE-2021-28710

certain VT-d IOMMUs may not work in shared page table mode For efficiency reasons, address translation control structures page tables may and, on suitable hardware, by default will be shared between CPUs, for second-level translation EPT, and IOMMUs. These page tables are presently set up to alwa...

xen: Multiple unsafe uses of guest-writable data from xenstore

xend in Xen 3.0.3 does not properly limit the contents of the /local/domain xenstore directory tree, and does not properly restrict a guest VM's write access within this tree, which allows guest OS users to cause a denial of service and possibly have unspecified other impact by writing to 1...