Information disclosure in Linux kernel - CVE-2021-47051
Published: June 8, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91407
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-2021-47051
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 lpspi_prepare_xfer_hardware() function in drivers/spi/spi-fsl-lpspi.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/4a01ad002d2e03c399af536562693752af7c81b1
- https://git.kernel.org/stable/c/ce02e58ddf8658a4c3bed2296f32a5873b3f7cce
- https://git.kernel.org/stable/c/b8207bfc539cd07d15e753ff2d179c5b61c673b1
- https://git.kernel.org/stable/c/6a2b5cee0d31ab6cc51030c441135b0e31217282
- https://git.kernel.org/stable/c/a03675497970a93fcf25d81d9d92a59c2d7377a7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.119