CVE-2024-46794

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  2. Vulnerabilities (CVE)
  3. CVE-2024-46794

3.3 /10

CVSS v3 : LOW

V3 Legend

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

I

n 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. ]

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
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
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

03 Nov 2025, 23:16

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html -

20 Nov 2024, 20:56

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/26c6af49d26ffc377e392e30d4086db19eed0ef7 - () https://git.kernel.org/stable/c/26c6af49d26ffc377e392e30d4086db19eed0ef7 - Patch
References () https://git.kernel.org/stable/c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fa - () https://git.kernel.org/stable/c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fa - Patch
References () https://git.kernel.org/stable/c/b6fb565a2d15277896583d471b21bc14a0c99661 - () https://git.kernel.org/stable/c/b6fb565a2d15277896583d471b21bc14a0c99661 - Patch
References () https://git.kernel.org/stable/c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7 - () https://git.kernel.org/stable/c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7 - Patch
CPE 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:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 3.3
CWE NVD-CWE-noinfo
First Time Linux
Linux linux Kernel

20 Sep 2024, 12:30

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: x86/tdx: Se corrige la fuga de datos en mmio_read() La función mmio_read() realiza una TDVMCALL para recuperar datos MMIO para una dirección del VMM. Sean notó que mmio_read() expone involuntariamente el valor de una variable inicializada (val) en la pila al VMM. Esta variable solo se necesita como valor de salida. No era necesario pasarla al VMM en primer lugar. No envíe el valor original de *val al VMM. [ dhansen: aclare para qué se usa 'val'. ]

18 Sep 2024, 08:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-09-18 08:15

Updated : 2025-11-03 23:16

NVD link : CVE-2024-46794

Mitre link : CVE-2024-46794

CVE.ORG link : CVE-2024-46794

JSON object : View

Products Affected

linux

CWE
NVD-CWE-noinfo