GHSA-475C-87X7-JX25

Vulnerability from github – Published: 2025-10-21 12:31 – Updated: 2025-10-21 12:31
VLAI?
Details

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

extcon: Modify extcon device to be created after driver data is set

Currently, someone can invoke the sysfs such as state_show() intermittently before dev_set_drvdata() is done. And it can be a cause of kernel Oops because of edev is Null at that time. So modified the driver registration to after setting drviver data.

  • Oops's backtrace.

Backtrace: [] (state_show) from [] (dev_attr_show) [] (dev_attr_show) from [] (sysfs_kf_seq_show) [] (sysfs_kf_seq_show) from [] (kernfs_seq_show) [] (kernfs_seq_show) from [] (seq_read) [] (seq_read) from [] (kernfs_fop_read) [] (kernfs_fop_read) from [] (__vfs_read) [] (__vfs_read) from [] (vfs_read) [] (vfs_read) from [] (ksys_read) [] (ksys_read) from [] (sys_read) [] (sys_read) from [] (__sys_trace_return)

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2022-49308"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:07Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nextcon: Modify extcon device to be created after driver data is set\n\nCurrently, someone can invoke the sysfs such as state_show()\nintermittently before dev_set_drvdata() is done.\nAnd it can be a cause of kernel Oops because of edev is Null at that time.\nSo modified the driver registration to after setting drviver data.\n\n- Oops\u0027s backtrace.\n\nBacktrace:\n[\u003cc067865c\u003e] (state_show) from [\u003cc05222e8\u003e] (dev_attr_show)\n[\u003cc05222c0\u003e] (dev_attr_show) from [\u003cc02c66e0\u003e] (sysfs_kf_seq_show)\n[\u003cc02c6648\u003e] (sysfs_kf_seq_show) from [\u003cc02c496c\u003e] (kernfs_seq_show)\n[\u003cc02c4938\u003e] (kernfs_seq_show) from [\u003cc025e2a0\u003e] (seq_read)\n[\u003cc025e11c\u003e] (seq_read) from [\u003cc02c50a0\u003e] (kernfs_fop_read)\n[\u003cc02c5064\u003e] (kernfs_fop_read) from [\u003cc0231cac\u003e] (__vfs_read)\n[\u003cc0231c5c\u003e] (__vfs_read) from [\u003cc0231ee0\u003e] (vfs_read)\n[\u003cc0231e34\u003e] (vfs_read) from [\u003cc0232464\u003e] (ksys_read)\n[\u003cc02323f0\u003e] (ksys_read) from [\u003cc02324fc\u003e] (sys_read)\n[\u003cc02324e4\u003e] (sys_read) from [\u003cc00091d0\u003e] (__sys_trace_return)",
  "id": "GHSA-475c-87x7-jx25",
  "modified": "2025-10-21T12:31:24Z",
  "published": "2025-10-21T12:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49308"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/033ec4e7e59ae5e1ef1e8c10bc6552926044ed1c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35ff1ac55d301efb3f467cf5426faaeb3452994b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/368e68ad6da4317fc4170e8d92b51c13d1bfe7a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5dcc2afe716d69f5112ce035cb14f007461ff189"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e721f3ad0535b24f19a62420f4da95212cf069c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/abf3b222614f49f98e606fccdd269161c0d70204"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb81ea998c461868d1168411a867d8ffee12f23f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d472c78cc82999d07bd09193a6718016ce9cd386"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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Detection rules are retrieved from Rulezet.