CVE-2024-36910

In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: 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 VMBus device UIO 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.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3d788b2fbe6a1a1a9e3db09742b90809d51638b7	Patch
https://git.kernel.org/stable/c/6466a0f6d235c8a18c602cb587160d7e49876db9	Patch
https://git.kernel.org/stable/c/dabf12bf994318d939f70d47cfda30e47abb2c54	Patch
https://git.kernel.org/stable/c/fe2c58602354fbd60680dc42ac3a0b772cda7d23	Patch
https://git.kernel.org/stable/c/3d788b2fbe6a1a1a9e3db09742b90809d51638b7	Patch
https://git.kernel.org/stable/c/6466a0f6d235c8a18c602cb587160d7e49876db9	Patch
https://git.kernel.org/stable/c/dabf12bf994318d939f70d47cfda30e47abb2c54	Patch
https://git.kernel.org/stable/c/fe2c58602354fbd60680dc42ac3a0b772cda7d23	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:6.9:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.9:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.9:rc3::::::

History

01 Apr 2025, 18:35

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel:6.9:rc3:::::: 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::::::
First Time		Linux Linux linux Kernel
References	~~() https://git.kernel.org/stable/c/3d788b2fbe6a1a1a9e3db09742b90809d51638b7 -~~	() https://git.kernel.org/stable/c/3d788b2fbe6a1a1a9e3db09742b90809d51638b7 - Patch
References	~~() https://git.kernel.org/stable/c/6466a0f6d235c8a18c602cb587160d7e49876db9 -~~	() https://git.kernel.org/stable/c/6466a0f6d235c8a18c602cb587160d7e49876db9 - Patch
References	~~() https://git.kernel.org/stable/c/dabf12bf994318d939f70d47cfda30e47abb2c54 -~~	() https://git.kernel.org/stable/c/dabf12bf994318d939f70d47cfda30e47abb2c54 - Patch
References	~~() https://git.kernel.org/stable/c/fe2c58602354fbd60680dc42ac3a0b772cda7d23 -~~	() https://git.kernel.org/stable/c/fe2c58602354fbd60680dc42ac3a0b772cda7d23 - Patch

21 Nov 2024, 09:22

Type	Values Removed	Values Added
References	~~() https://git.kernel.org/stable/c/3d788b2fbe6a1a1a9e3db09742b90809d51638b7 -~~	() https://git.kernel.org/stable/c/3d788b2fbe6a1a1a9e3db09742b90809d51638b7 -
References	~~() https://git.kernel.org/stable/c/6466a0f6d235c8a18c602cb587160d7e49876db9 -~~	() https://git.kernel.org/stable/c/6466a0f6d235c8a18c602cb587160d7e49876db9 -
References	~~() https://git.kernel.org/stable/c/dabf12bf994318d939f70d47cfda30e47abb2c54 -~~	() https://git.kernel.org/stable/c/dabf12bf994318d939f70d47cfda30e47abb2c54 -
References	~~() https://git.kernel.org/stable/c/fe2c58602354fbd60680dc42ac3a0b772cda7d23 -~~	() https://git.kernel.org/stable/c/fe2c58602354fbd60680dc42ac3a0b772cda7d23 -

03 Jul 2024, 02:03

Type	Values Removed	Values Added
CWE		CWE-200
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.2
Summary		(es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: uio_hv_generic: 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 UIO del dispositivo VMBus 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 : 2025-04-01 18:35

NVD link : CVE-2024-36910

Mitre link : CVE-2024-36910

CVE.ORG link : CVE-2024-36910

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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6.2 /10