CVE-2021-47499

iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove

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:

iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove

When ACPI type is ACPI_SMO8500, the data->dready_trig will not be set, the
memory allocated by iio_triggered_buffer_setup() will not be freed, and cause
memory leak as follows:

unreferenced object 0xffff888009551400 (size 512):
comm "i2c-SMO8500-125", pid 911, jiffies 4294911787 (age 83.852s)
hex dump (first 32 bytes):
02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 20 e2 e5 c0 ff ff ff ff ........ .......
backtrace:
[<0000000041ce75ee>] kmem_cache_alloc_trace+0x16d/0x360
[<000000000aeb17b0>] iio_kfifo_allocate+0x41/0x130 [kfifo_buf]
[<000000004b40c1f5>] iio_triggered_buffer_setup_ext+0x2c/0x210 [industrialio_triggered_buffer]
[<000000004375b15f>] kxcjk1013_probe+0x10c3/0x1d81 [kxcjk_1013]

Fix it by remove data->dready_trig condition in probe and remove.

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: iio: accel: kxcjk-1013: corrija la posible pérdida de memoria en la sonda y elimínela. Cuando el tipo ACPI es ACPI_SMO8500, data->dready_trig no se configurará, la memoria asignada por iio_triggered_buffer_setup( ) no se liberará y provocará una pérdida de memoria de la siguiente manera: objeto sin referencia 0xffff888009551400 (tamaño 512): comm "i2c-SMO8500-125", pid 911, jiffies 4294911787 (edad 83,852 s) volcado hexadecimal (primeros 32 bytes): 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 20 e2 e5 c0 ff ff ff ff .... .... ....... retroceso: [<0000000041ce75ee>] kmem_cache_alloc_trace+0x16d/0x360 [<000000000aeb17b0>] iio_kfifo_allocate+0x41/0x130 [kfifo_buf] [<000000004b40c1f5>] ed_buffer_setup_ext+0x2c/0x210 [industrialio_triggered_buffer] [ <000000004375b15f>] kxcjk1013_probe+0x10c3/0x1d81 [kxcjk_1013] Solucionarlo eliminando la condición data->dready_trig en la sonda y eliminándola.

*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

2024-05-22 CVE Reserved
2024-05-24 CVE Published
2024-05-25 EPSS Updated
2024-09-11 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (9)

URL	Tag	Source
https://git.kernel.org/stable/c/a25691c1f9674090fb66586cf4c5d60d3efdf339	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/8c1d43f3a3fc7184c42d7398bdf59a2a2903e4fc	2021-12-14
https://git.kernel.org/stable/c/60a55b9d91ba99eb8cf015bc46dc2de05e168a15	2021-12-14
https://git.kernel.org/stable/c/3899700ddacbf7aaafadf44464fff3ff0d4e3307	2021-12-14
https://git.kernel.org/stable/c/a3730f74159ad00a28960c0efe2a931fe6fe6b45	2021-12-14
https://git.kernel.org/stable/c/8c163a14277115ca962103910ab4cce55e862ffb	2021-12-14
https://git.kernel.org/stable/c/ee86d0bad80bdcd11a87e188a596727f41b62320	2021-12-14
https://git.kernel.org/stable/c/14508fe13b1c578b3d2ba574f1d48b351975860c	2021-12-14
https://git.kernel.org/stable/c/70c9774e180d151abaab358108e3510a8e615215	2021-11-17

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"				>= 4.2 < 4.4.295 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 4.4.295"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.2 < 4.9.293 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 4.9.293"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.2 < 4.14.258 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 4.14.258"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.2 < 4.19.221 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 4.19.221"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.2 < 5.4.165 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 5.4.165"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.2 < 5.10.85 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 5.10.85"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.2 < 5.15.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 5.15.8"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.2 < 5.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 5.16"		en		Affected