GHSA-W255-HQMV-G27G

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-13 21:31
VLAI?
Details

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

ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut

Number of MW LUTs depends on NTB configuration and can be set to zero, in such scenario rounddown_pow_of_two will cause undefined behaviour and should not be performed. This patch ensures that rounddown_pow_of_two is called on valid value.

Severity ?
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-43141"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:31Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut\n\nNumber of MW LUTs depends on NTB configuration and can be set to zero,\nin such scenario rounddown_pow_of_two will cause undefined behaviour and\nshould not be performed.\nThis patch ensures that rounddown_pow_of_two is called on valid value.",
  "id": "GHSA-w255-hqmv-g27g",
  "modified": "2026-05-13T21:31:57Z",
  "published": "2026-05-06T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43141"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/186615f8855a0be4ee7d3fcd09a8ecc10e783b08"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a867d0d79a4a570a33f2f433919ad2bd7a27b67"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e4d5e8d86a969318340be95470bb76e52392082"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5590cd04d6845c01a6bad985a491c58af6fb5389"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a11d03d116eef138a7249202bd772c8e61915aec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a133e3caf844a3f56b6eef89ddaa66115874f6bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0559d07afabfddaaded6a61a16154486b956764"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d652ef399f131fcd5f8f34266167449ee7c9e5b3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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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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