CVE-2025-21656
MEDIUM EPSS 9.7%
Published Jan 21, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Published Jan 21, 2025 1y ago
Last Modified Jun 17, 2026 2w ago
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]
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
9.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Affected Products 8
References 3
- git.kernel.org https://git.kernel.org/stable/c/42268d885e44af875a6474f7bba519cc6cea6a9d
- git.kernel.org https://git.kernel.org/stable/c/53e25b10a28edaf8c2a1d3916fd8929501a50dfc
- git.kernel.org https://git.kernel.org/stable/c/82163d63ae7a4c36142cd252388737205bb7e4b9
Remediation
- git.kernel.org https://git.kernel.org/stable/c/42268d885e44af875a6474f7bba519cc6cea6a9d
- git.kernel.org https://git.kernel.org/stable/c/53e25b10a28edaf8c2a1d3916fd8929501a50dfc
- git.kernel.org https://git.kernel.org/stable/c/82163d63ae7a4c36142cd252388737205bb7e4b9