CVE-2025-21656

hwmon: (drivetemp) Fix driver producing garbage data when SCSI errors occur

State: Published
Severity: Not scored
Published: Jan 21, 2025
Updated: Oct 30, 2026
Reserved: Dec 29, 2024

Description

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]

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	5b46903d8bf372e563bf2150d46b87fff197a109 to before babdf2a11329d30dc5086eb7a938a360aa490282Affected 5b46903d8bf372e563bf2150d46b87fff197a109 to before 0435d35f9d511fa5ddba49c9f68f947e395c93f9Affected 5b46903d8bf372e563bf2150d46b87fff197a109 to before f9723fd2770ef5563ff1685f72bcc1c411219c29Affected 5b46903d8bf372e563bf2150d46b87fff197a109 to before 53e25b10a28edaf8c2a1d3916fd8929501a50dfcAffected 5b46903d8bf372e563bf2150d46b87fff197a109 to before 42268d885e44af875a6474f7bba519cc6cea6a9dAffected 5b46903d8bf372e563bf2150d46b87fff197a109 to before 82163d63ae7a4c36142cd252388737205bb7e4b9Affected
LinuxLinux	5.6Affected before 5.6Not affected 5.10.273 through 5.10.Not affected 5.15.224 through 5.15.Not affected 6.1.191 through 6.1.Not affected 6.6.72 through 6.6.Not affected 6.12.10 through 6.12.*Not affected 6.13 and laterNot affected

Product

Versions

LinuxLinux

5b46903d8bf372e563bf2150d46b87fff197a109 to before babdf2a11329d30dc5086eb7a938a360aa490282Affected
5b46903d8bf372e563bf2150d46b87fff197a109 to before 0435d35f9d511fa5ddba49c9f68f947e395c93f9Affected
5b46903d8bf372e563bf2150d46b87fff197a109 to before f9723fd2770ef5563ff1685f72bcc1c411219c29Affected
5b46903d8bf372e563bf2150d46b87fff197a109 to before 53e25b10a28edaf8c2a1d3916fd8929501a50dfcAffected
5b46903d8bf372e563bf2150d46b87fff197a109 to before 42268d885e44af875a6474f7bba519cc6cea6a9dAffected
5b46903d8bf372e563bf2150d46b87fff197a109 to before 82163d63ae7a4c36142cd252388737205bb7e4b9Affected

LinuxLinux

5.6Affected
before 5.6Not affected
5.10.273 through 5.10.*Not affected
5.15.224 through 5.15.*Not affected
6.1.191 through 6.1.*Not affected
6.6.72 through 6.6.*Not affected
6.12.10 through 6.12.*Not affected
6.13 and laterNot affected

References

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