Use of uninitialized resource in Linux kernel - CVE-2021-47583
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92933
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47583
CWE-ID: CWE-908
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to use of uninitialized resource within the mxl111sf_init() and mxl111sf_get_stream_config_dvbt() functions in drivers/media/usb/dvb-usb-v2/mxl111sf.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2021-47583
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/4b2d9600b31f9ba7adbc9f3c54a068615d27b390
- https://git.kernel.org/stable/c/96f182c9f48b984447741f054ec301fdc8517035
- https://git.kernel.org/stable/c/b99bdf127af91d53919e96292c05f737c45ea59a
- https://git.kernel.org/stable/c/8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba
- https://git.kernel.org/stable/c/44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.222
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.88
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.168