CVE-2021-47425

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47425
In the Linux kernel, the following vulnerability has been resolved: i2c: acpi: fix resource leak in reconfiguration device addition acpi_i2c_find_adapter_by_handle() calls bus_find_device() which takes a reference on the adapter which is never released which will result in a reference count leak and render the adapter unremovable. Make sure to put the adapter after creating the client in the same manner that we do for OF. [wsa: fixed title]

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/3d9d458a8aaafa47268ea4f1b4114a9f12927989 Patch
https://git.kernel.org/stable/c/60bacf259e8c2eb2324f3e13275200baaee9494b Patch
https://git.kernel.org/stable/c/6558b646ce1c2a872fe1c2c7cb116f05a2c1950f Patch
https://git.kernel.org/stable/c/90f1077c9184ec2ae9989e4642f211263f301694 Patch
https://git.kernel.org/stable/c/b8090a84d7758b929d348bafbd86bb7a10c5fb63 Patch
https://git.kernel.org/stable/c/f86de018fd7a24ee07372d55ffa7824f0c674a95 Patch
https://git.kernel.org/stable/c/3d9d458a8aaafa47268ea4f1b4114a9f12927989 Patch
https://git.kernel.org/stable/c/60bacf259e8c2eb2324f3e13275200baaee9494b Patch
https://git.kernel.org/stable/c/6558b646ce1c2a872fe1c2c7cb116f05a2c1950f Patch
https://git.kernel.org/stable/c/90f1077c9184ec2ae9989e4642f211263f301694 Patch
https://git.kernel.org/stable/c/b8090a84d7758b929d348bafbd86bb7a10c5fb63 Patch
https://git.kernel.org/stable/c/f86de018fd7a24ee07372d55ffa7824f0c674a95 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
History

23 Sep 2025, 20:18

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CWE CWE-401
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/3d9d458a8aaafa47268ea4f1b4114a9f12927989 - () https://git.kernel.org/stable/c/3d9d458a8aaafa47268ea4f1b4114a9f12927989 - Patch
References () https://git.kernel.org/stable/c/60bacf259e8c2eb2324f3e13275200baaee9494b - () https://git.kernel.org/stable/c/60bacf259e8c2eb2324f3e13275200baaee9494b - Patch
References () https://git.kernel.org/stable/c/6558b646ce1c2a872fe1c2c7cb116f05a2c1950f - () https://git.kernel.org/stable/c/6558b646ce1c2a872fe1c2c7cb116f05a2c1950f - Patch
References () https://git.kernel.org/stable/c/90f1077c9184ec2ae9989e4642f211263f301694 - () https://git.kernel.org/stable/c/90f1077c9184ec2ae9989e4642f211263f301694 - Patch
References () https://git.kernel.org/stable/c/b8090a84d7758b929d348bafbd86bb7a10c5fb63 - () https://git.kernel.org/stable/c/b8090a84d7758b929d348bafbd86bb7a10c5fb63 - Patch
References () https://git.kernel.org/stable/c/f86de018fd7a24ee07372d55ffa7824f0c674a95 - () https://git.kernel.org/stable/c/f86de018fd7a24ee07372d55ffa7824f0c674a95 - Patch

21 Nov 2024, 06:36

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: i2c: acpi: corrige la fuga de recursos en la reconfiguración del dispositivo añdido acpi_i2c_find_adapter_by_handle() llama a bus_find_device() que toma una referencia en el adaptador que nunca se libera, lo que resultará en una fuga de recuento de referencias y haga que el adaptador no sea extraíble. Asegúrese de colocar el adaptador después de crear el cliente de la misma manera que lo hacemos para OF. [wsa: título fijo]
References () https://git.kernel.org/stable/c/3d9d458a8aaafa47268ea4f1b4114a9f12927989 - () https://git.kernel.org/stable/c/3d9d458a8aaafa47268ea4f1b4114a9f12927989 -
References () https://git.kernel.org/stable/c/60bacf259e8c2eb2324f3e13275200baaee9494b - () https://git.kernel.org/stable/c/60bacf259e8c2eb2324f3e13275200baaee9494b -
References () https://git.kernel.org/stable/c/6558b646ce1c2a872fe1c2c7cb116f05a2c1950f - () https://git.kernel.org/stable/c/6558b646ce1c2a872fe1c2c7cb116f05a2c1950f -
References () https://git.kernel.org/stable/c/90f1077c9184ec2ae9989e4642f211263f301694 - () https://git.kernel.org/stable/c/90f1077c9184ec2ae9989e4642f211263f301694 -
References () https://git.kernel.org/stable/c/b8090a84d7758b929d348bafbd86bb7a10c5fb63 - () https://git.kernel.org/stable/c/b8090a84d7758b929d348bafbd86bb7a10c5fb63 -
References () https://git.kernel.org/stable/c/f86de018fd7a24ee07372d55ffa7824f0c674a95 - () https://git.kernel.org/stable/c/f86de018fd7a24ee07372d55ffa7824f0c674a95 -

21 May 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-21 15:15

Updated : 2025-09-23 20:18

NVD link : CVE-2021-47425

Mitre link : CVE-2021-47425

CVE.ORG link : CVE-2021-47425

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime