cbcvebase.
CVE-2024-47727
published 2024-10-21

CVE-2024-47727: 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…

PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.25%
16.1th percentile
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

21 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.115-1 (bookworm)linux 6.1.115-1 (bookworm)
debianlinux-6.1< linux 6.1.115-1 (bookworm)linux 6.1.115-1 (bookworm)
linuxlinux
linuxlinux>= 31d58c4e557d46fa7f8557714250fb6f89c941ae < 25703a3c980e21548774eea8c8a87a75c5c8f58c25703a3c980e21548774eea8c8a87a75c5c8f58c
linuxlinux>= 31d58c4e557d46fa7f8557714250fb6f89c941ae < 4c0c5dcb5471de5fc8f0a1c4980e5815339e1cee4c0c5dcb5471de5fc8f0a1c4980e5815339e1cee
linuxlinux>= 31d58c4e557d46fa7f8557714250fb6f89c941ae < 18ecd5b74682839e7cdafb7cd1ec106df7baa18c18ecd5b74682839e7cdafb7cd1ec106df7baa18c
linuxlinux>= 31d58c4e557d46fa7f8557714250fb6f89c941ae < bca2e29f7e26ce7c3522f8b324c0bd85612f68e3bca2e29f7e26ce7c3522f8b324c0bd85612f68e3
linuxlinux>= 31d58c4e557d46fa7f8557714250fb6f89c941ae < d4fc4d01471528da8a9797a065982e05090e1d81d4fc4d01471528da8a9797a065982e05090e1d81
linuxlinux_kernel>= 0 < 6.1.115-16.1.115-1
linuxlinux_kernel>= 0 < 6.11.2-16.11.2-1
linuxlinux_kernel>= 0 < 6.11.2-16.11.2-1
linuxlinux_kernel>= 0 < 6.8.0-54.566.8.0-54.56
linuxlinux_kernel>= 0 < 6.11.0-18.186.11.0-18.18
linuxlinux_kernel>= 5.19 < 6.1.1136.1.113
linuxlinux_kernel>= 6.11 < 6.11.26.11.2
linuxlinux_kernel>= 6.2 < 6.6.546.6.54
linuxlinux_kernel>= 6.7 < 6.10.136.10.13
msrcazl3_kernel_6.6.51.1-5_on_azure_linux_3.0
msrcazl3_kernel_6.6.56.1-5_on_azure_linux_3.0
msrcazure_linux_3.0_arm
msrcazure_linux_3.0_x64

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
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