CVE-2022-49944 (GCVE-0-2022-49944)

Vulnerability from cvelistv5 – Published: 2025-06-18 10:59 – Updated: 2025-06-18 10:59
VLAI?
Title
Revert "usb: typec: ucsi: add a common function ucsi_unregister_connectors()"
Summary
In the Linux kernel, the following vulnerability has been resolved: Revert "usb: typec: ucsi: add a common function ucsi_unregister_connectors()" The recent commit 87d0e2f41b8c ("usb: typec: ucsi: add a common function ucsi_unregister_connectors()") 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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 87d0e2f41b8cc2018499be4e8003fa8c09b6f2fb , < 3d4044c9e6d2e3f11f1f8b5e0ee8647d3eb1afad (git)
Affected: 87d0e2f41b8cc2018499be4e8003fa8c09b6f2fb , < 5f73aa2cf8bef4a39baa1591c3144ede4788826e (git)
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    Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 5.19.8 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"usb: typec: ucsi: add a common function ucsi_unregister_connectors()\"\n\nThe recent commit 87d0e2f41b8c (\"usb: typec: ucsi: add a common\nfunction ucsi_unregister_connectors()\") introduced a regression that\ncaused NULL dereference at reading the power supply sysfs.  It\u0027s a\nstale sysfs entry that should have been removed but remains with NULL\nops.  The commit changed the error handling to skip the entries after\na NULL con-\u003ewq, and this leaves the power device unreleased.\n\nFor addressing the regression, the straight revert is applied here.\nFurther code improvements can be done from the scratch again."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-06-18T10:59:59.319Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/5f73aa2cf8bef4a39baa1591c3144ede4788826e"
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      "title": "Revert \"usb: typec: ucsi: add a common function ucsi_unregister_connectors()\"",
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    "datePublished": "2025-06-18T10:59:59.319Z",
    "dateReserved": "2025-06-18T10:57:27.381Z",
    "dateUpdated": "2025-06-18T10:59:59.319Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
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