CVE-2021-47612

nfc: fix segfault in nfc_genl_dump_devices_done

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:

nfc: fix segfault in nfc_genl_dump_devices_done

When kmalloc in nfc_genl_dump_devices() fails then
nfc_genl_dump_devices_done() segfaults as below

KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/2014
Workqueue: events netlink_sock_destruct_work
RIP: 0010:klist_iter_exit+0x26/0x80
Call Trace:
<TASK>
class_dev_iter_exit+0x15/0x20
nfc_genl_dump_devices_done+0x3b/0x50
genl_lock_done+0x84/0xd0
netlink_sock_destruct+0x8f/0x270
__sk_destruct+0x64/0x3b0
sk_destruct+0xa8/0xd0
__sk_free+0x2e8/0x3d0
sk_free+0x51/0x90
netlink_sock_destruct_work+0x1c/0x20
process_one_work+0x411/0x710
worker_thread+0x6fd/0xa80

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfc: corrige el error de segmentación en nfc_genl_dump_devices_done Cuando falla kmalloc en nfc_genl_dump_devices(), entonces el error de segmentación de nfc_genl_dump_devices_done() se muestra a continuación KASAN: null-ptr-deref en el rango [0x0000000000000008-0x00 0000000000000f] CPU: 0 PID : 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5 Nombre del hardware: PC estándar QEMU (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/ 2014 Cola de trabajo: eventos netlink_sock_destruct_work RIP: 0010:klist_iter_exit+0x26/0x80 Seguimiento de llamadas: class_dev_iter_exit+0x15/0x20 nfc_genl_dump_devices_done+0x3b/0x50 genl_lock_done+0x84/0xd0 estructura+0x8f/0x270 __sk_destruct+0x64/0x3b0 sk_destruct+0xa8/0xd0 __sk_free+0x2e8/0x3d0 sk_free+0x51/0x90 netlink_sock_destruct_work+0x1c/0x20 Process_one_work+0x411/0x710 trabajador_thread+0x6fd/0xa80

*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

2024-06-19 CVE Reserved
2024-06-19 CVE Published
2024-08-28 EPSS Updated
2024-11-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34	2021-12-22
https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529c	2021-12-22
https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946c	2021-12-22
https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3	2021-12-22
https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112	2021-12-17
https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181	2021-12-17
https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96d	2021-12-17
https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203	2021-12-09

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"				< 4.4.296 Search vendor "Linux" for product "Linux Kernel" and version " < 4.4.296"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.9.294 Search vendor "Linux" for product "Linux Kernel" and version " < 4.9.294"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.259 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.259"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.222 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.222"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.167 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.167"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.87 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.87"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.10 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.10"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.16 Search vendor "Linux" for product "Linux Kernel" and version " < 5.16"		en		Affected