Tracker / CVE-2024-47727
CVE-2024-47727
High 7.8
In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix "in-kernel MMIO" check TDX only supports kernel-initiated MMIO operations. The handle_mmio() function checks if the #VE exception occurred in the kernel and rejects the operation if it did not. However, userspace can deceive the kernel into performing MMIO on its behalf. For example, if userspace can point a syscall to an MMIO address, syscall does get_user() or put_user() on it, triggering MMIO #VE. The kernel will treat the #VE as in-kernel MMIO. Ensure that the target MMIO address is within the kernel before decoding instruction.
Affected products and versions
| linux | linux_kernel · 5.19 → 6.1.113 |
|---|---|
| linux | linux_kernel · 6.11 → 6.11.2 |
| linux | linux_kernel · 6.2 → 6.6.54 |
| linux | linux_kernel · 6.7 → 6.10.13 |
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.