CVE-2025-21773

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-21773
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21773.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-21773
Downstream
Related
Published
2025-02-27T02:18:20Z
Modified
2025-10-17T21:39:15.671226Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
can: etas_es58x: fix potential NULL pointer dereference on udev->serial
Details

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

can: etas_es58x: fix potential NULL pointer dereference on udev->serial

The driver assumed that es58x_dev->udev->serial could never be NULL. While this is true on commercially available devices, an attacker could spoof the device identity providing a NULL USB serial number. That would trigger a NULL pointer dereference.

Add a check on es58x_dev->udev->serial before accessing it.

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
9f06631c3f1f0f298536443df85a6837ba4c5f5c
Fixed
1590667a60753ee5a54871f2840ceefd4a7831fa
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9f06631c3f1f0f298536443df85a6837ba4c5f5c
Fixed
722e8e1219c8b6ac2865011fe339315d6a8d0721
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9f06631c3f1f0f298536443df85a6837ba4c5f5c
Fixed
5059ea98d7bc133903d3e47ab36df6ed11d0c95f
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9f06631c3f1f0f298536443df85a6837ba4c5f5c
Fixed
a1ad2109ce41c9e3912dadd07ad8a9c640064ffb

Affected versions

v6.*

v6.1
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
v6.12.10
v6.12.11
v6.12.12
v6.12.13
v6.12.14
v6.12.15
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
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.13.1
v6.13.2
v6.13.3
v6.14-rc1
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
v6.6.72
v6.6.73
v6.6.74
v6.6.75
v6.6.76
v6.6.77
v6.6.78
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": "Function",
        "id": "CVE-2025-21773-026d884f",
        "signature_version": "v1",
        "digest": {
            "length": 1061.0,
            "function_hash": "254381591604199686299348530311121468798"
        },
        "target": {
            "function": "es58x_devlink_info_get",
            "file": "drivers/net/can/usb/etas_es58x/es58x_devlink.c"
        },
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1590667a60753ee5a54871f2840ceefd4a7831fa"
    },
    {
        "signature_type": "Line",
        "id": "CVE-2025-21773-0f1ea32c",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "211229695735404882818378227828898203729",
                "44961197775626568028297109559599782129",
                "7481805705222947569065966125247852411",
                "44482395220087883556060558529086823785"
            ]
        },
        "target": {
            "file": "drivers/net/can/usb/etas_es58x/es58x_devlink.c"
        },
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a1ad2109ce41c9e3912dadd07ad8a9c640064ffb"
    },
    {
        "signature_type": "Function",
        "id": "CVE-2025-21773-15ebeda6",
        "signature_version": "v1",
        "digest": {
            "length": 1061.0,
            "function_hash": "254381591604199686299348530311121468798"
        },
        "target": {
            "function": "es58x_devlink_info_get",
            "file": "drivers/net/can/usb/etas_es58x/es58x_devlink.c"
        },
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a1ad2109ce41c9e3912dadd07ad8a9c640064ffb"
    },
    {
        "signature_type": "Function",
        "id": "CVE-2025-21773-185f2a9e",
        "signature_version": "v1",
        "digest": {
            "length": 1061.0,
            "function_hash": "254381591604199686299348530311121468798"
        },
        "target": {
            "function": "es58x_devlink_info_get",
            "file": "drivers/net/can/usb/etas_es58x/es58x_devlink.c"
        },
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@722e8e1219c8b6ac2865011fe339315d6a8d0721"
    },
    {
        "signature_type": "Line",
        "id": "CVE-2025-21773-27f18ab7",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "211229695735404882818378227828898203729",
                "44961197775626568028297109559599782129",
                "7481805705222947569065966125247852411",
                "44482395220087883556060558529086823785"
            ]
        },
        "target": {
            "file": "drivers/net/can/usb/etas_es58x/es58x_devlink.c"
        },
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5059ea98d7bc133903d3e47ab36df6ed11d0c95f"
    },
    {
        "signature_type": "Line",
        "id": "CVE-2025-21773-6003caf9",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "211229695735404882818378227828898203729",
                "44961197775626568028297109559599782129",
                "7481805705222947569065966125247852411",
                "44482395220087883556060558529086823785"
            ]
        },
        "target": {
            "file": "drivers/net/can/usb/etas_es58x/es58x_devlink.c"
        },
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1590667a60753ee5a54871f2840ceefd4a7831fa"
    },
    {
        "signature_type": "Line",
        "id": "CVE-2025-21773-db8c301d",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "211229695735404882818378227828898203729",
                "44961197775626568028297109559599782129",
                "7481805705222947569065966125247852411",
                "44482395220087883556060558529086823785"
            ]
        },
        "target": {
            "file": "drivers/net/can/usb/etas_es58x/es58x_devlink.c"
        },
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@722e8e1219c8b6ac2865011fe339315d6a8d0721"
    },
    {
        "signature_type": "Function",
        "id": "CVE-2025-21773-e7eb5b0d",
        "signature_version": "v1",
        "digest": {
            "length": 1061.0,
            "function_hash": "254381591604199686299348530311121468798"
        },
        "target": {
            "function": "es58x_devlink_info_get",
            "file": "drivers/net/can/usb/etas_es58x/es58x_devlink.c"
        },
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5059ea98d7bc133903d3e47ab36df6ed11d0c95f"
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.79
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.16
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.13.4