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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-47583 Detail

Description

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.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-908 Use of Uninitialized Resource cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47583
NVD Published Date:
06/19/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org