CVE - CVE-2024-47727

CVE-ID
CVE-2024-47727	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/18ecd5b74682839e7cdafb7cd1ec106df7baa18c URL:https://git.kernel.org/stable/c/18ecd5b74682839e7cdafb7cd1ec106df7baa18c MISC:https://git.kernel.org/stable/c/25703a3c980e21548774eea8c8a87a75c5c8f58c URL:https://git.kernel.org/stable/c/25703a3c980e21548774eea8c8a87a75c5c8f58c MISC:https://git.kernel.org/stable/c/4c0c5dcb5471de5fc8f0a1c4980e5815339e1cee URL:https://git.kernel.org/stable/c/4c0c5dcb5471de5fc8f0a1c4980e5815339e1cee MISC:https://git.kernel.org/stable/c/bca2e29f7e26ce7c3522f8b324c0bd85612f68e3 URL:https://git.kernel.org/stable/c/bca2e29f7e26ce7c3522f8b324c0bd85612f68e3 MISC:https://git.kernel.org/stable/c/d4fc4d01471528da8a9797a065982e05090e1d81 URL:https://git.kernel.org/stable/c/d4fc4d01471528da8a9797a065982e05090e1d81
Assigning CNA
kernel.org
Date Record Created
20240930	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240930)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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