CVE-2021-47480

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47480
In the Linux kernel, the following vulnerability has been resolved: scsi: core: Put LLD module refcnt after SCSI device is released SCSI host release is triggered when SCSI device is freed. We have to make sure that the low-level device driver module won't be unloaded before SCSI host instance is released because shost->hostt is required in the release handler. Make sure to put LLD module refcnt after SCSI device is released. Fixes a kernel panic of 'BUG: unable to handle page fault for address' reported by Changhui and Yi.

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/1105573d964f7b78734348466b01f5f6ba8a1813 Patch
https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b Patch
https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffee Patch
https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f Patch
https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428 Patch
https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0 Patch
https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3f Patch
https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836 Patch
https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813 Patch
https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b Patch
https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffee Patch
https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f Patch
https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428 Patch
https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0 Patch
https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3f Patch
https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836 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:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*
History

29 Sep 2025, 16:43

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
CWE NVD-CWE-noinfo
References () https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813 - () https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813 - Patch
References () https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b - () https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b - Patch
References () https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffee - () https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffee - Patch
References () https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f - () https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f - Patch
References () https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428 - () https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428 - Patch
References () https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0 - () https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0 - Patch
References () https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3f - () https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3f - Patch
References () https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836 - () https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836 - Patch
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:5.15:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*
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:*:*:*:*:*:*

21 Nov 2024, 06:36

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: core: colocar el módulo LLD refcnt después de liberar el dispositivo SCSI. La liberación del host SCSI se activa cuando se libera el dispositivo SCSI. Tenemos que asegurarnos de que el módulo del controlador de dispositivo de bajo nivel no se descargue antes de que se lance la instancia del host SCSI porque se requiere shost->hostt en el controlador de lanzamiento. Asegúrese de poner el módulo LLD refcnt después de lanzar el dispositivo SCSI. Corrige un problema de pánico del kernel de 'ERROR: no se puede manejar el error de página para la dirección' informado por Changhui y Yi.
References () https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813 - () https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813 -
References () https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b - () https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b -
References () https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffee - () https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffee -
References () https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f - () https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f -
References () https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428 - () https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428 -
References () https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0 - () https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0 -
References () https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3f - () https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3f -
References () https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836 - () https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836 -

22 May 2024, 09:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-22 09:15

Updated : 2025-09-29 16:43

NVD link : CVE-2021-47480

Mitre link : CVE-2021-47480

CVE.ORG link : CVE-2021-47480

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo