CVE-2021-47360

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47360
In the Linux kernel, the following vulnerability has been resolved: binder: make sure fd closes complete During BC_FREE_BUFFER processing, the BINDER_TYPE_FDA object cleanup may close 1 or more fds. The close operations are completed using the task work mechanism -- which means the thread needs to return to userspace or the file object may never be dereferenced -- which can lead to hung processes. Force the binder thread back to userspace if an fd is closed during BC_FREE_BUFFER handling.

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/5fdb55c1ac9585eb23bb2541d5819224429e103d Patch
https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e Patch
https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621 Patch
https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7 Patch
https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d Patch
https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e Patch
https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621 Patch
https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7 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:4.20.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
History

12 May 2025, 19:54

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d - () https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d - Patch
References () https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e - () https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e - Patch
References () https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621 - () https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621 - Patch
References () https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7 - () https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:4.20.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-252

21 Nov 2024, 06:35

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d - () https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d -
References () https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e - () https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e -
References () https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621 - () https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621 -
References () https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7 - () https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7 -
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: carpeta: asegúrese de que fd se cierre por completo Durante el procesamiento BC_FREE_BUFFER, la limpieza del objeto BINDER_TYPE_FDA puede cerrar 1 o más fds. Las operaciones de cierre se completan utilizando el mecanismo de trabajo de tareas, lo que significa que el hilo debe regresar al espacio de usuario o es posible que nunca se elimine la referencia al objeto de archivo, lo que puede llevar a procesos bloqueados. Fuerce el hilo de la carpeta a regresar al espacio de usuario si se cierra un fd durante el manejo de BC_FREE_BUFFER.

21 May 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-21 15:15

Updated : 2025-05-12 19:54

NVD link : CVE-2021-47360

Mitre link : CVE-2021-47360

CVE.ORG link : CVE-2021-47360

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-252

Unchecked Return Value