CVE-2024-36911

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  3. CVE-2024-36911

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

I

n the Linux kernel, the following vulnerability has been resolved: hv_netvsc: Don't free decrypted memory In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. The netvsc driver could free decrypted/shared pages if set_memory_decrypted() fails. Check the decrypted field in the gpadl to decide whether to free the memory.

References
Link Resource
https://git.kernel.org/stable/c/4aaed9dbe8acd2b6114458f0498a617283d6275b Patch
https://git.kernel.org/stable/c/a56fe611326332bf6b7126e5559590c57dcebad4 Patch
https://git.kernel.org/stable/c/bbf9ac34677b57506a13682b31a2a718934c0e31 Patch
https://git.kernel.org/stable/c/4aaed9dbe8acd2b6114458f0498a617283d6275b Patch
https://git.kernel.org/stable/c/a56fe611326332bf6b7126e5559590c57dcebad4 Patch
https://git.kernel.org/stable/c/bbf9ac34677b57506a13682b31a2a718934c0e31 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:6.9:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
History

30 Sep 2025, 17:57

Type Values Removed Values Added
CWE CWE-401
CPE cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/4aaed9dbe8acd2b6114458f0498a617283d6275b - () https://git.kernel.org/stable/c/4aaed9dbe8acd2b6114458f0498a617283d6275b - Patch
References () https://git.kernel.org/stable/c/a56fe611326332bf6b7126e5559590c57dcebad4 - () https://git.kernel.org/stable/c/a56fe611326332bf6b7126e5559590c57dcebad4 - Patch
References () https://git.kernel.org/stable/c/bbf9ac34677b57506a13682b31a2a718934c0e31 - () https://git.kernel.org/stable/c/bbf9ac34677b57506a13682b31a2a718934c0e31 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

21 Nov 2024, 09:22

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/4aaed9dbe8acd2b6114458f0498a617283d6275b - () https://git.kernel.org/stable/c/4aaed9dbe8acd2b6114458f0498a617283d6275b -
References () https://git.kernel.org/stable/c/a56fe611326332bf6b7126e5559590c57dcebad4 - () https://git.kernel.org/stable/c/a56fe611326332bf6b7126e5559590c57dcebad4 -
References () https://git.kernel.org/stable/c/bbf9ac34677b57506a13682b31a2a718934c0e31 - () https://git.kernel.org/stable/c/bbf9ac34677b57506a13682b31a2a718934c0e31 -
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: hv_netvsc: no liberar memoria descifrada. En las máquinas virtuales CoCo, es posible que el host que no es de confianza provoque que set_memory_encrypted() o set_memory_decrypted() falle, de modo que se devuelva un error y el resultado La memoria es compartida. Las personas que llaman deben tener cuidado al manejar estos errores para evitar devolver memoria descifrada (compartida) al asignador de páginas, lo que podría provocar problemas funcionales o de seguridad. El controlador netvsc podría liberar páginas descifradas/compartidas si falla set_memory_decrypted(). Verifique el campo descifrado en gpadl para decidir si desea liberar la memoria.

30 May 2024, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-30 16:15

Updated : 2025-09-30 17:57

NVD link : CVE-2024-36911

Mitre link : CVE-2024-36911

CVE.ORG link : CVE-2024-36911

JSON object : View

Products Affected

linux

CWE
CWE-401

Missing Release of Memory after Effective Lifetime