GHSA-JP2P-CX4H-XHW3

Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 15:30
VLAI
Details

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

scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()

In the format 1 path, the virtual port is located on ha->vp_list while holding vport_slock, but the lock is dropped before vp is used: qla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/ REGISTER_FDMI_NEEDED are set on vp. No reference is taken across that window, so a concurrent qla24xx_deallocate_vp_id() can tear the vport down and free it, leading to a use-after-free.

Take a vport reference (vref_count) under vport_slock when the matching vp is found, and drop it after the last use of vp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before unlinking and freeing the vport, so the pointer stays valid. This matches the reference idiom already used by the other ha->vp_list traversals.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-89861"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T11:16:54Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()\n\nIn the format 1 path, the virtual port is located on ha-\u003evp_list while\nholding vport_slock, but the lock is dropped before vp is used:\nqla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/\nREGISTER_FDMI_NEEDED are set on vp. No reference is taken across that\nwindow, so a concurrent qla24xx_deallocate_vp_id() can tear the vport\ndown and free it, leading to a use-after-free.\n\nTake a vport reference (vref_count) under vport_slock when the matching\nvp is found, and drop it after the last use of\nvp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before\nunlinking and freeing the vport, so the pointer stays valid. This\nmatches the reference idiom already used by the other ha-\u003evp_list\ntraversals.",
  "id": "GHSA-jp2p-cx4h-xhw3",
  "modified": "2026-09-16T15:30:59Z",
  "published": "2026-09-16T12:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89861"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/267533b28ddf2c9223d30ad7e6960fa9e936428e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/47272152a13d202d98496208f9bf382c1cf4d4fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/793cedee296fd819bfadc2a7ec4d52faf9c09a0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d09ef32af1e05d79f29b460521a20bc4e6fd2ecf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d556f899964d184e6cb788f3fa9dcddcafe1ab2d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8d2eb510c063a8ca79a5dc766a4303d3925fe83"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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