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CVE-2024-47727

· Published 21/10/2024 13:15 · Modified 23/10/2024 20:32

Labels: CVE-2024-47727 2024-10-21416baaa9-dc9f-4396-8d5f-8c081fb06d67CVE-2024-47727CWE-754

Essential information

Published
21/10/2024 13:15
Modified
23/10/2024 20:32
Author
—
Creator
—
CVSS
7.8 HIGH (v3.1)
CISA KEV
No
CWE
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS metrics

Description

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.

NVD status

Status
Analyzed — CVE has been recently published to the CVE List and has been received by the NVD.
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD
View on NVD

Affected products (CPE)

ProductCPE
linux / linux kernel cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux / linux kernel cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux / linux kernel cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux / linux kernel cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

References