CVE-2024-46794

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix data leak in mmio_read() The mmio_read() function makes a TDVMCALL to retrieve MMIO data for an address from the VMM. Sean noticed that mmio_read() unintentionally exposes the value of an initialized variable (val) on the stack to the VMM. This variable is only needed as an output value. It did not need to be passed to the VMM in the first place. Do not send the original value of *val to the VMM. [ dhansen: clarify what 'val' is used for. ]

CVSS v3 3.3 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/26c6af49d26ffc377e392e30d4086db19eed0ef7	Patch
https://git.kernel.org/stable/c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fa	Patch
https://git.kernel.org/stable/c/b6fb565a2d15277896583d471b21bc14a0c99661	Patch
https://git.kernel.org/stable/c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc6::::::

History

No history.

Information

Published : 2024-09-18 08:15

Updated : 2024-11-20 20:56

NVD link : CVE-2024-46794

Mitre link : CVE-2024-46794

CVE.ORG link : CVE-2024-46794

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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