GHSA-XVFJ-3828-276M

Vulnerability from github – Published: 2026-08-15 15:30 – Updated: 2026-08-19 18:32
VLAI
Details

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

forcedeth: fix UAF of txrx_stats in nv_remove

nv_remove() frees the per-CPU txrx_stats before unregister_netdev(). Until unregister completes, ndo_get_stats64, the NAPI/xmit data path, and nv_close()/drain may still access txrx_stats, leading to a use-after-free.

Free the stats only after unregister_netdev().

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-2026-74548"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T13:18:00Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nforcedeth: fix UAF of txrx_stats in nv_remove\n\nnv_remove() frees the per-CPU txrx_stats before unregister_netdev().\nUntil unregister completes, ndo_get_stats64, the NAPI/xmit data path,\nand nv_close()/drain may still access txrx_stats, leading to a\nuse-after-free.\n\nFree the stats only after unregister_netdev().",
  "id": "GHSA-xvfj-3828-276m",
  "modified": "2026-08-19T18:32:30Z",
  "published": "2026-08-15T15:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74548"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/201e05aa531eba0dfe2ee05b4e178f6ffa12c8b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22666ba1420164753d7b0f5a841986b25ace5435"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c22b4ee0bd003cecfc14ca28981cb213e201f70"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae20a8a4de06a289d40b0a0633d8d573f1fcb049"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9d24a205fd508b9999fcab6aca4c590490a12cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cdf864d5d3c813ae1876f2bacc1cf3ac3c66dfc9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf2dcde2284562ff87830ca0b7fa2b06e95aef1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d51ce7a63b76eda02cabfed1b0cc277b2f5c9bcc"
    }
  ],
  "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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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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