CVE-2024-50193

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-50193
In the Linux kernel, the following vulnerability has been resolved: x86/entry_32: Clear CPU buffers after register restore in NMI return CPU buffers are currently cleared after call to exc_nmi, but before register state is restored. This may be okay for MDS mitigation but not for RDFS. Because RDFS mitigation requires CPU buffers to be cleared when registers don't have any sensitive data. Move CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.

7.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/227358e89703c344008119be7e8ffa3fdb5b92de Patch
https://git.kernel.org/stable/c/43778de19d2ef129636815274644b9c16e78c66b Patch
https://git.kernel.org/stable/c/48a2440d0f20c826b884e04377ccc1e4696c84e9 Patch
https://git.kernel.org/stable/c/64adf22c4bc73ede920baca5defefb70f190cdbc Patch
https://git.kernel.org/stable/c/6f44a5fc15b5cece0785bc07453db77d99b0a6de Patch
https://git.kernel.org/stable/c/b6400eb0b347821efc57760221f8fb6d63b9548a 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*
History

29 Nov 2024, 19:29

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE NVD-CWE-noinfo
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/227358e89703c344008119be7e8ffa3fdb5b92de - () https://git.kernel.org/stable/c/227358e89703c344008119be7e8ffa3fdb5b92de - Patch
References () https://git.kernel.org/stable/c/43778de19d2ef129636815274644b9c16e78c66b - () https://git.kernel.org/stable/c/43778de19d2ef129636815274644b9c16e78c66b - Patch
References () https://git.kernel.org/stable/c/48a2440d0f20c826b884e04377ccc1e4696c84e9 - () https://git.kernel.org/stable/c/48a2440d0f20c826b884e04377ccc1e4696c84e9 - Patch
References () https://git.kernel.org/stable/c/64adf22c4bc73ede920baca5defefb70f190cdbc - () https://git.kernel.org/stable/c/64adf22c4bc73ede920baca5defefb70f190cdbc - Patch
References () https://git.kernel.org/stable/c/6f44a5fc15b5cece0785bc07453db77d99b0a6de - () https://git.kernel.org/stable/c/6f44a5fc15b5cece0785bc07453db77d99b0a6de - Patch
References () https://git.kernel.org/stable/c/b6400eb0b347821efc57760221f8fb6d63b9548a - () https://git.kernel.org/stable/c/b6400eb0b347821efc57760221f8fb6d63b9548a - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.1

08 Nov 2024, 19:01

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: x86/entry_32: Borrar los búferes de la CPU después de restaurar el registro en el retorno NMI Los búferes de la CPU se borran actualmente después de la llamada a exc_nmi, pero antes de que se restaure el estado del registro. Esto puede ser adecuado para la mitigación de MDS, pero no para RDFS. Porque la mitigación de RDFS requiere que se borren los búferes de la CPU cuando los registros no tienen datos confidenciales. Mueva CLEAR_CPU_BUFFERS después de RESTORE_ALL_NMI.

08 Nov 2024, 06:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-11-08 06:15

Updated : 2024-11-29 19:29

NVD link : CVE-2024-50193

Mitre link : CVE-2024-50193

CVE.ORG link : CVE-2024-50193

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo