IT

Tracker / CVE-2026-98164

CVE-2026-98164

High 7.1

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Check write tracking in all address spaces kvm_gfn_is_write_tracked() checks only the supplied memslot, but page tracking is per-address-space and shadow pages are shared across all address spaces. With SMM, a GFN can therefore be write-tracked in one address space and appear untracked through the other. Check the supplied slot first, then the slot for the other address space. This ensures all callers honor write tracking regardless of the active address space. In particular, it prevents mmu_try_to_unsync_pages() from marking an upper-level shadow page unsync and eventually triggering the BUG in pte_list_remove(). [invert direction of the conditional. - Paolo]

Affected products and versions

linux linux_kernel
linux linux_kernel · 4.2 → 6.1.187
linux linux_kernel · 6.13 → 6.18.49
linux linux_kernel · 6.19 → 7.1.13
linux linux_kernel · 6.2 → 6.6.156
linux linux_kernel · 6.7 → 6.12.108

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References