CVE-2024-36893

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: Check for port partner validity before consuming it typec_register_partner() does not guarantee partner registration to always succeed. In the event of failure, port->partner is set to the error value or NULL. Given that port->partner validity is not checked, this results in the following crash: Unable to handle kernel NULL pointer dereference at virtual address xx pc : run_state_machine+0x1bc8/0x1c08 lr : run_state_machine+0x1b90/0x1c08 .. Call trace: run_state_machine+0x1bc8/0x1c08 tcpm_state_machine_work+0x94/0xe4 kthread_worker_fn+0x118/0x328 kthread+0x1d0/0x23c ret_from_fork+0x10/0x20 To prevent the crash, check for port->partner validity before derefencing it in all the call sites.

CVSS v3 5.5 MEDIUM

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

References

Link	Resource
https://git.kernel.org/stable/c/2a07e6f0ad8a6e504a3912cfe8dc859b7d0740a5
https://git.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637	Patch
https://git.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249dd	Patch
https://git.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57	Patch
https://git.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77	Patch
https://git.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637	Patch
https://git.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249dd	Patch
https://git.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57	Patch
https://git.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77	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::::::::

History

21 Nov 2024, 09:22

Type	Values Removed	Values Added
References	~~() https://git.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637 - Patch~~	() https://git.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637 - Patch
References	~~() https://git.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249dd - Patch~~	() https://git.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249dd - Patch
References	~~() https://git.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57 - Patch~~	() https://git.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57 - Patch
References	~~() https://git.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77 - Patch~~	() https://git.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77 - Patch

17 Oct 2024, 14:15

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/2a07e6f0ad8a6e504a3912cfe8dc859b7d0740a5 -

10 Jun 2024, 19:21

Type	Values Removed	Values Added
CWE		CWE-476
CPE		cpe:2.3:o:linux:linux_kernel::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
References	~~() https://git.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637 -~~	() https://git.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637 - Patch
References	~~() https://git.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249dd -~~	() https://git.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249dd - Patch
References	~~() https://git.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57 -~~	() https://git.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57 - Patch
References	~~() https://git.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77 -~~	() https://git.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77 - Patch
Summary		(es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: typec: tcpm: verifique la validez del socio del puerto antes de consumirlo. typec_register_partner() no garantiza que el registro del socio sea siempre exitoso. En caso de error, puerto->socio se establece en el valor de error o NULL. Dado que no se verifica la validez del puerto->partner, esto produce el siguiente bloqueo: No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual xx pc: run_state_machine+0x1bc8/0x1c08 lr: run_state_machine+0x1b90/0x1c08 .. Seguimiento de llamadas: run_state_machine+ 0x1bc8/0x1c08 tcpm_state_machine_work+0x94/0xe4 kthread_worker_fn+0x118/0x328 kthread+0x1d0/0x23c ret_from_fork+0x10/0x20 Para evitar el bloqueo, verifique la validez del puerto->partner antes de eliminar la barrera en todos los sitios de llamadas.
First Time		Linux Linux linux Kernel

30 May 2024, 16:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-05-30 16:15

Updated : 2024-11-21 09:22

NVD link : CVE-2024-36893

Mitre link : CVE-2024-36893

CVE.ORG link : CVE-2024-36893

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

5.5 /10