CVE-2024-46794

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

18/09/2024

Last modified:

03/11/2025

Description

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 &#39;val&#39; is used for. ]

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 3.30 LOW
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

3.30

Severity 3.x

LOW

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		5.19 (including)
cpe:2.3:o:linux:linux_kernel::::::::	6.1 (including)	6.1.110 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.6 (including)	6.6.51 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.10 (including)	6.10.10 (excluding)
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::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-46794

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools