CVE-2025-21656

In the Linux kernel, the following vulnerability has been resolved: hwmon: (drivetemp) Fix driver producing garbage data when SCSI errors occur scsi_execute_cmd() function can return both negative (linux codes) and positive (scsi_cmnd result field) error codes. Currently the driver just passes error codes of scsi_execute_cmd() to hwmon core, which is incorrect because hwmon only checks for negative error codes. This leads to hwmon reporting uninitialized data to userspace in case of SCSI errors (for example if the disk drive was disconnected). This patch checks scsi_execute_cmd() output and returns -EIO if it's error code is positive. [groeck: Avoid inline variable declaration for portability]

The following products are affected by CVE-2025-21656 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-21656.

URL	Resource
https://git.kernel.org/stable/c/42268d885e44af875a6474f7bba519cc6cea6a9d
https://git.kernel.org/stable/c/53e25b10a28edaf8c2a1d3916fd8929501a50dfc
https://git.kernel.org/stable/c/82163d63ae7a4c36142cd252388737205bb7e4b9
https://lore.kernel.org/linux-cve-announce/2025012131-CVE-2025-21656-b967@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-21656
https://www.cve.org/CVERecord?id=CVE-2025-21656