CVE-2025-21656

Source
https://nvd.nist.gov/vuln/detail/CVE-2025-21656
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21656.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-21656
Downstream
Related
Published
2025-01-21T12:18:13Z
Modified
2025-10-22T08:46:02.407458Z
Summary
hwmon: (drivetemp) Fix driver producing garbage data when SCSI errors occur
Details

In the Linux kernel, the following vulnerability has been resolved:

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

scsiexecutecmd() function can return both negative (linux codes) and positive (scsi_cmnd result field) error codes.

Currently the driver just passes error codes of scsiexecutecmd() 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 scsiexecutecmd() output and returns -EIO if it's error code is positive.

[groeck: Avoid inline variable declaration for portability]

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5b46903d8bf372e563bf2150d46b87fff197a109
Fixed
53e25b10a28edaf8c2a1d3916fd8929501a50dfc
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5b46903d8bf372e563bf2150d46b87fff197a109
Fixed
42268d885e44af875a6474f7bba519cc6cea6a9d
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5b46903d8bf372e563bf2150d46b87fff197a109
Fixed
82163d63ae7a4c36142cd252388737205bb7e4b9

Affected versions

v5.*

v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.11
v5.11-rc1
v5.11-rc2
v5.11-rc3
v5.11-rc4
v5.11-rc5
v5.11-rc6
v5.11-rc7
v5.12
v5.12-rc1
v5.12-rc1-dontuse
v5.12-rc2
v5.12-rc3
v5.12-rc4
v5.12-rc5
v5.12-rc6
v5.12-rc7
v5.12-rc8
v5.13
v5.13-rc1
v5.13-rc2
v5.13-rc3
v5.13-rc4
v5.13-rc5
v5.13-rc6
v5.13-rc7
v5.14
v5.14-rc1
v5.14-rc2
v5.14-rc3
v5.14-rc4
v5.14-rc5
v5.14-rc6
v5.14-rc7
v5.15
v5.15-rc1
v5.15-rc2
v5.15-rc3
v5.15-rc4
v5.15-rc5
v5.15-rc6
v5.15-rc7
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.17
v5.17-rc1
v5.17-rc2
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
v5.18-rc1
v5.18-rc2
v5.18-rc3
v5.18-rc4
v5.18-rc5
v5.18-rc6
v5.18-rc7
v5.19
v5.19-rc1
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8
v5.5
v5.6
v5.6-rc1
v5.6-rc2
v5.6-rc3
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7
v5.8
v5.8-rc1
v5.8-rc2
v5.8-rc3
v5.8-rc4
v5.8-rc5
v5.8-rc6
v5.8-rc7
v5.9
v5.9-rc1
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8

v6.*

v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.1
v6.1-rc1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.12.1
v6.12.2
v6.12.3
v6.12.4
v6.12.5
v6.12.6
v6.12.7
v6.12.8
v6.12.9
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.6.1
v6.6.10
v6.6.11
v6.6.12
v6.6.13
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
v6.6.2
v6.6.20
v6.6.21
v6.6.22
v6.6.23
v6.6.24
v6.6.25
v6.6.26
v6.6.27
v6.6.28
v6.6.29
v6.6.3
v6.6.30
v6.6.31
v6.6.32
v6.6.33
v6.6.34
v6.6.35
v6.6.36
v6.6.37
v6.6.38
v6.6.39
v6.6.4
v6.6.40
v6.6.41
v6.6.42
v6.6.43
v6.6.44
v6.6.45
v6.6.46
v6.6.47
v6.6.48
v6.6.49
v6.6.5
v6.6.50
v6.6.51
v6.6.52
v6.6.53
v6.6.54
v6.6.55
v6.6.56
v6.6.57
v6.6.58
v6.6.59
v6.6.6
v6.6.60
v6.6.61
v6.6.62
v6.6.63
v6.6.64
v6.6.65
v6.6.66
v6.6.67
v6.6.68
v6.6.69
v6.6.7
v6.6.70
v6.6.71
v6.6.8
v6.6.9
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.8
v6.8-rc1
v6.8-rc2
v6.8-rc3
v6.8-rc4
v6.8-rc5
v6.8-rc6
v6.8-rc7
v6.9
v6.9-rc1
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7

Database specific

vanir_signatures

[
    {
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "87123763851623041867638585457038791659",
                "82573861073895434887138759238836841502",
                "198466892955653680130390109670655416962",
                "227221378239493916228304988548952799013",
                "105528930668713677891615799754702471498",
                "249879033619555237467982827588503767868",
                "188344498329923334792709065823596254961",
                "88648129933679379527773940971624973003",
                "85178918344439090287686233402270940485"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "drivers/hwmon/drivetemp.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@82163d63ae7a4c36142cd252388737205bb7e4b9",
        "id": "CVE-2025-21656-6a18c1e6"
    },
    {
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "87123763851623041867638585457038791659",
                "82573861073895434887138759238836841502",
                "198466892955653680130390109670655416962",
                "227221378239493916228304988548952799013",
                "105528930668713677891615799754702471498",
                "249879033619555237467982827588503767868",
                "188344498329923334792709065823596254961",
                "88648129933679379527773940971624973003",
                "85178918344439090287686233402270940485"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "drivers/hwmon/drivetemp.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@42268d885e44af875a6474f7bba519cc6cea6a9d",
        "id": "CVE-2025-21656-88f69b1d"
    },
    {
        "signature_type": "Function",
        "digest": {
            "function_hash": "220987138219183059332412819667982228021",
            "length": 643.0
        },
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "drivetemp_scsi_command",
            "file": "drivers/hwmon/drivetemp.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@53e25b10a28edaf8c2a1d3916fd8929501a50dfc",
        "id": "CVE-2025-21656-d24b3e77"
    },
    {
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "87123763851623041867638585457038791659",
                "82573861073895434887138759238836841502",
                "198466892955653680130390109670655416962",
                "227221378239493916228304988548952799013",
                "105528930668713677891615799754702471498",
                "249879033619555237467982827588503767868",
                "188344498329923334792709065823596254961",
                "88648129933679379527773940971624973003",
                "85178918344439090287686233402270940485"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "drivers/hwmon/drivetemp.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@53e25b10a28edaf8c2a1d3916fd8929501a50dfc",
        "id": "CVE-2025-21656-d466f494"
    },
    {
        "signature_type": "Function",
        "digest": {
            "function_hash": "220987138219183059332412819667982228021",
            "length": 643.0
        },
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "drivetemp_scsi_command",
            "file": "drivers/hwmon/drivetemp.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@82163d63ae7a4c36142cd252388737205bb7e4b9",
        "id": "CVE-2025-21656-dec9d9d1"
    },
    {
        "signature_type": "Function",
        "digest": {
            "function_hash": "220987138219183059332412819667982228021",
            "length": 643.0
        },
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "drivetemp_scsi_command",
            "file": "drivers/hwmon/drivetemp.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@42268d885e44af875a6474f7bba519cc6cea6a9d",
        "id": "CVE-2025-21656-f471896c"
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.6.0
Fixed
6.6.72
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.10