CVE-2021-47583

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47583
In the Linux kernel, the following vulnerability has been resolved: media: mxl111sf: change mutex_init() location Syzbot reported, that mxl111sf_ctrl_msg() uses uninitialized mutex. The problem was in wrong mutex_init() location. Previous mutex_init(&state->msg_lock) call was in ->init() function, but dvb_usbv2_init() has this order of calls: dvb_usbv2_init() dvb_usbv2_adapter_init() dvb_usbv2_adapter_frontend_init() props->frontend_attach() props->init() Since mxl111sf_* devices call mxl111sf_ctrl_msg() in ->frontend_attach() internally we need to initialize state->msg_lock before frontend_attach(). To achieve it, ->probe() call added to all mxl111sf_* devices, which will simply initiaize mutex.

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/44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f Patch
https://git.kernel.org/stable/c/4b2d9600b31f9ba7adbc9f3c54a068615d27b390 Patch
https://git.kernel.org/stable/c/8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba Patch
https://git.kernel.org/stable/c/96f182c9f48b984447741f054ec301fdc8517035 Patch
https://git.kernel.org/stable/c/b99bdf127af91d53919e96292c05f737c45ea59a Patch
https://git.kernel.org/stable/c/44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f Patch
https://git.kernel.org/stable/c/4b2d9600b31f9ba7adbc9f3c54a068615d27b390 Patch
https://git.kernel.org/stable/c/8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba Patch
https://git.kernel.org/stable/c/96f182c9f48b984447741f054ec301fdc8517035 Patch
https://git.kernel.org/stable/c/b99bdf127af91d53919e96292c05f737c45ea59a 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:*:*:*:*:*:*:*:*
History

21 Nov 2024, 06:36

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f - Patch () https://git.kernel.org/stable/c/44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f - Patch
References () https://git.kernel.org/stable/c/4b2d9600b31f9ba7adbc9f3c54a068615d27b390 - Patch () https://git.kernel.org/stable/c/4b2d9600b31f9ba7adbc9f3c54a068615d27b390 - Patch
References () https://git.kernel.org/stable/c/8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba - Patch () https://git.kernel.org/stable/c/8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba - Patch
References () https://git.kernel.org/stable/c/96f182c9f48b984447741f054ec301fdc8517035 - Patch () https://git.kernel.org/stable/c/96f182c9f48b984447741f054ec301fdc8517035 - Patch
References () https://git.kernel.org/stable/c/b99bdf127af91d53919e96292c05f737c45ea59a - Patch () https://git.kernel.org/stable/c/b99bdf127af91d53919e96292c05f737c45ea59a - Patch

07 Nov 2024, 17:41

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f - () https://git.kernel.org/stable/c/44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f - Patch
References () https://git.kernel.org/stable/c/4b2d9600b31f9ba7adbc9f3c54a068615d27b390 - () https://git.kernel.org/stable/c/4b2d9600b31f9ba7adbc9f3c54a068615d27b390 - Patch
References () https://git.kernel.org/stable/c/8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba - () https://git.kernel.org/stable/c/8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba - Patch
References () https://git.kernel.org/stable/c/96f182c9f48b984447741f054ec301fdc8517035 - () https://git.kernel.org/stable/c/96f182c9f48b984447741f054ec301fdc8517035 - Patch
References () https://git.kernel.org/stable/c/b99bdf127af91d53919e96292c05f737c45ea59a - () https://git.kernel.org/stable/c/b99bdf127af91d53919e96292c05f737c45ea59a - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel
CWE CWE-908
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

20 Jun 2024, 12:43

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: medio: mxl111sf: cambiar la ubicación de mutex_init() Syzbot informó que mxl111sf_ctrl_msg() usa un mutex no inicializado. El problema estaba en la ubicación mutex_init() incorrecta. La llamada anterior a mutex_init(&state->msg_lock) estaba en la función ->init(), pero dvb_usbv2_init() tiene este orden de llamadas: dvb_usbv2_init() dvb_usbv2_adapter_init() dvb_usbv2_adapter_frontend_init() props->frontend_attach() props->init() Desde Los dispositivos mxl111sf_* llaman a mxl111sf_ctrl_msg() en ->frontend_attach() internamente, necesitamos inicializar state->msg_lock antes de frontend_attach(). Para lograrlo, se agrega la llamada ->probe() a todos los dispositivos mxl111sf_*, lo que simplemente iniciará el mutex.

19 Jun 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-06-19 15:15

Updated : 2024-11-21 06:36

NVD link : CVE-2021-47583

Mitre link : CVE-2021-47583

CVE.ORG link : CVE-2021-47583

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-908

Use of Uninitialized Resource


NetmanageIT Website NetmanageIT OSINT Web NetmanageIT OpenCTI NetmanageIT PDF Tools NetmanageIT CTO Corner Blog NetmanageIT Email Header Analyzer NetmanageIT Password Pusher NetmanageIT Internet Health and Latency Dashboard NetmanageIT Dedicated Speed Test Site NetmanageIT Ubuntu Mirror 10Gbps Copyright OpenCVE 2024