CVE-2021-47372

net: macb: fix use after free on rmmod

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

net: macb: fix use after free on rmmod

plat_dev->dev->platform_data is released by platform_device_unregister(),
use of pclk and hclk is a use-after-free. Since device unregister won't
need a clk device we adjust the function call sequence to fix this issue.

[ 31.261225] BUG: KASAN: use-after-free in macb_remove+0x77/0xc6 [macb_pci]
[ 31.275563] Freed by task 306:
[ 30.276782] platform_device_release+0x25/0x80

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: macb: corrige el use after free en rmmod plat_dev->dev->platform_data es publicado por platform_device_unregister(), el uso de pclk y hclk es un use after free. Dado que la cancelación del registro del dispositivo no necesitará un dispositivo clk, ajustamos la secuencia de llamada a la función para solucionar este problema. [31.261225] ERROR: KASAN: use after free en macb_remove+0x77/0xc6 [macb_pci] [31.275563] Liberado por la tarea 306: [30.276782] platform_device_release+0x25/0x80

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-05-21 CVE Reserved
2024-05-21 CVE Published
2024-05-22 EPSS Updated
2024-09-11 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/a7d521cc726f30b8e679a6f36d04b18a8ab3c536	2021-10-06
https://git.kernel.org/stable/c/46670fb832ee80943715df618632ca13c2e96f2b	2021-10-06
https://git.kernel.org/stable/c/1da750d1e2140ef43d64d17f301ff6f41b45541e	2021-09-30
https://git.kernel.org/stable/c/7721221e87d25c9840d9ca6b986dbdc410d5ce2b	2021-09-30
https://git.kernel.org/stable/c/4ad6f2d23b0f6ac0d3e5f3102a4256d1c86c90f5	2021-09-30
https://git.kernel.org/stable/c/d82d5303c4c539db86588ffb5dc5b26c3f1513e8	2021-09-09

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.249 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.249"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.209 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.209"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.150 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.150"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.70 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.70"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.14.9 Search vendor "Linux" for product "Linux Kernel" and version " < 5.14.9"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15"		en		Affected