GHSA-CJ6Q-34VM-G3X7

Vulnerability from github – Published: 2026-05-01 15:30 – Updated: 2026-05-03 09:33
VLAI?
Details

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

net: mana: fix use-after-free in add_adev() error path

If auxiliary_device_add() fails, add_adev() jumps to add_fail and calls auxiliary_device_uninit(adev).

The auxiliary device has its release callback set to adev_release(), which frees the containing struct mana_adev. Since adev is embedded in struct mana_adev, the subsequent fall-through to init_fail and access to adev->id may result in a use-after-free.

Fix this by saving the allocated auxiliary device id in a local variable before calling auxiliary_device_add(), and use that saved id in the cleanup path after auxiliary_device_uninit().

Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-43056"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-01T15:16:52Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: fix use-after-free in add_adev() error path\n\nIf auxiliary_device_add() fails, add_adev() jumps to add_fail and calls\nauxiliary_device_uninit(adev).\n\nThe auxiliary device has its release callback set to adev_release(),\nwhich frees the containing struct mana_adev. Since adev is embedded in\nstruct mana_adev, the subsequent fall-through to init_fail and access\nto adev-\u003eid may result in a use-after-free.\n\nFix this by saving the allocated auxiliary device id in a local\nvariable before calling auxiliary_device_add(), and use that saved id\nin the cleanup path after auxiliary_device_uninit().",
  "id": "GHSA-cj6q-34vm-g3x7",
  "modified": "2026-05-03T09:33:11Z",
  "published": "2026-05-01T15:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43056"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43f5b19fd190fea20d052bc84741b28031d5baa9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f4061f8225d18695e5afe9bbf1cb7bd673d7872"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4ea7d8907cf72b259bf70bd8c2e791e1c4ff70f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d88541ffd56d62a61e77209080001eddd4d69815"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5a75bf026c686b91a7dc6f9c5caf5016745d1fe"
    }
  ],
  "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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