Information disclosure in Linux kernel comedi drivers driver

Published: 2024-06-08

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2021-47477
CWE-ID	CWE-200
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Linux kernel Operating systems & Components / Operating system
Vendor	Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU91330

Risk: Low

CVSSv3.1: 2.9 [AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47477

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to information disclosure within the dt9812_read_info(), dt9812_read_multiple_registers(), dt9812_write_multiple_registers() and dt9812_rmw_multiple_registers() functions in drivers/staging/comedi/drivers/dt9812.c. A local user can gain access to sensitive information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.