CVE-2022-49944

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49944
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49944.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49944
Downstream
Related
Published
2025-06-18T10:59:59Z
Modified
2025-10-21T11:23:50.637481Z
Summary
Revert "usb: typec: ucsi: add a common function ucsi_unregister_connectors()"
Details

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

Revert "usb: typec: ucsi: add a common function ucsiunregisterconnectors()"

The recent commit 87d0e2f41b8c ("usb: typec: ucsi: add a common function ucsiunregisterconnectors()") introduced a regression that caused NULL dereference at reading the power supply sysfs. It's a stale sysfs entry that should have been removed but remains with NULL ops. The commit changed the error handling to skip the entries after a NULL con->wq, and this leaves the power device unreleased.

For addressing the regression, the straight revert is applied here. Further code improvements can be done from the scratch again.

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
87d0e2f41b8cc2018499be4e8003fa8c09b6f2fb
Fixed
3d4044c9e6d2e3f11f1f8b5e0ee8647d3eb1afad
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
87d0e2f41b8cc2018499be4e8003fa8c09b6f2fb
Fixed
5f73aa2cf8bef4a39baa1591c3144ede4788826e

Affected versions

v5.*

v5.18
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
v5.19.1
v5.19.2
v5.19.3
v5.19.4
v5.19.5
v5.19.6
v5.19.7

v6.*

v6.0-rc1

Database specific

vanir_signatures

[
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3d4044c9e6d2e3f11f1f8b5e0ee8647d3eb1afad",
        "id": "CVE-2022-49944-0fd06f9a",
        "deprecated": false,
        "target": {
            "file": "drivers/usb/typec/ucsi/ucsi.c"
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5f73aa2cf8bef4a39baa1591c3144ede4788826e",
        "id": "CVE-2022-49944-11ea235f",
        "deprecated": false,
        "target": {
            "function": "ucsi_init",
            "file": "drivers/usb/typec/ucsi/ucsi.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 1248.0,
            "function_hash": "92173058003376344370768778062653839813"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5f73aa2cf8bef4a39baa1591c3144ede4788826e",
        "id": "CVE-2022-49944-36a87fee",
        "deprecated": false,
        "target": {
            "function": "ucsi_unregister_connectors",
            "file": "drivers/usb/typec/ucsi/ucsi.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 458.0,
            "function_hash": "169661277934217551670063647133906229975"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5f73aa2cf8bef4a39baa1591c3144ede4788826e",
        "id": "CVE-2022-49944-7a235840",
        "deprecated": false,
        "target": {
            "file": "drivers/usb/typec/ucsi/ucsi.c"
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "156223306171886838820238820887852168528",
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                "147539719211442373700068530255572607202",
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                "101067449083564016952170259903491568815",
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3d4044c9e6d2e3f11f1f8b5e0ee8647d3eb1afad",
        "id": "CVE-2022-49944-b44f79db",
        "deprecated": false,
        "target": {
            "function": "ucsi_init",
            "file": "drivers/usb/typec/ucsi/ucsi.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 1248.0,
            "function_hash": "92173058003376344370768778062653839813"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@5f73aa2cf8bef4a39baa1591c3144ede4788826e",
        "id": "CVE-2022-49944-c82792ef",
        "deprecated": false,
        "target": {
            "function": "ucsi_unregister",
            "file": "drivers/usb/typec/ucsi/ucsi.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 211.0,
            "function_hash": "236917856575453851580782410491202913969"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3d4044c9e6d2e3f11f1f8b5e0ee8647d3eb1afad",
        "id": "CVE-2022-49944-da883338",
        "deprecated": false,
        "target": {
            "function": "ucsi_unregister",
            "file": "drivers/usb/typec/ucsi/ucsi.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 211.0,
            "function_hash": "236917856575453851580782410491202913969"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3d4044c9e6d2e3f11f1f8b5e0ee8647d3eb1afad",
        "id": "CVE-2022-49944-f80ef3ef",
        "deprecated": false,
        "target": {
            "function": "ucsi_unregister_connectors",
            "file": "drivers/usb/typec/ucsi/ucsi.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 458.0,
            "function_hash": "169661277934217551670063647133906229975"
        }
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.19.0
Fixed
5.19.8