Information disclosure in Linux kernel - CVE-2021-47477
Published: June 8, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91330
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47477
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
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.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/a6af69768d5cb4b2528946d53be5fa19ade37723
- https://git.kernel.org/stable/c/365a346cda82f51d835c49136a00a9df8a78c7f2
- https://git.kernel.org/stable/c/8a52bc480992c7c9da3ebfea456af731f50a4b97
- https://git.kernel.org/stable/c/39ea61037ae78f14fa121228dd962ea3280eacf3
- https://git.kernel.org/stable/c/3efb7af8ac437085b6c776e5b54830b149d86efe
- https://git.kernel.org/stable/c/786f5b03450454557ff858a8bead5d7c0cbf78d6
- https://git.kernel.org/stable/c/3ac273d154d634e2034508a14db82a95d7ad12ed
- https://git.kernel.org/stable/c/20cebb8b620dc987e55ddc46801de986e081757e
- https://git.kernel.org/stable/c/536de747bc48262225889a533db6650731ab25d3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.255
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.217
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.292
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.290
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.79
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.18
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.159