ghsa-5w8m-6wwq-mm8m
Vulnerability from github
Published
2024-10-21 15:32
Modified
2024-10-23 18:33
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: elx: libefc: Fix potential use after free in efc_nport_vport_del()

The kref_put() function will call nport->release if the refcount drops to zero. The nport->release release function is _efc_nport_free() which frees "nport". But then we dereference "nport" on the next line which is a use after free. Re-order these lines to avoid the use after free.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-49852"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T13:15:05Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: elx: libefc: Fix potential use after free in efc_nport_vport_del()\n\nThe kref_put() function will call nport-\u003erelease if the refcount drops to\nzero.  The nport-\u003erelease release function is _efc_nport_free() which frees\n\"nport\".  But then we dereference \"nport\" on the next line which is a use\nafter free.  Re-order these lines to avoid the use after free.",
  "id": "GHSA-5w8m-6wwq-mm8m",
  "modified": "2024-10-23T18:33:07Z",
  "published": "2024-10-21T15:32:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49852"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16a570f07d870a285b0c0b0d1ca4dff79e8aa5ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e4b02fad094976763af08fec2c620f4f8edd9ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c2908985e4ae0ea1b526b3916de9e5351650908"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98752fcd076a8cbc978016eae7125b4971be1eec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/abc71e89170ed32ecf0a5a29f31aa711e143e941"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/baeb8628ab7f4577740f00e439d3fdf7c876b0ff"
    }
  ],
  "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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