ghsa-3whv-3wrh-jjqq
Vulnerability from github
Published
2024-05-21 15:31
Modified
2024-12-26 21:30
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

scsi: iscsi: Fix conn use after free during resets

If we haven't done a unbind target call we can race where iscsi_conn_teardown wakes up the EH thread and then frees the conn while those threads are still accessing the conn ehwait.

We can only do one TMF per session so this just moves the TMF fields from the conn to the session. We can then rely on the iscsi_session_teardown->iscsi_remove_session->__iscsi_unbind_session call to remove the target and it's devices, and know after that point there is no device or scsi-ml callout trying to access the session.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47328"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:19Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: iscsi: Fix conn use after free during resets\n\nIf we haven\u0027t done a unbind target call we can race where\niscsi_conn_teardown wakes up the EH thread and then frees the conn while\nthose threads are still accessing the conn ehwait.\n\nWe can only do one TMF per session so this just moves the TMF fields from\nthe conn to the session. We can then rely on the\niscsi_session_teardown-\u003eiscsi_remove_session-\u003e__iscsi_unbind_session call\nto remove the target and it\u0027s devices, and know after that point there is\nno device or scsi-ml callout trying to access the session.",
  "id": "GHSA-3whv-3wrh-jjqq",
  "modified": "2024-12-26T21:30:36Z",
  "published": "2024-05-21T15:31:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47328"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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