GHSA-P327-QW84-66RM

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33
VLAI
Details

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

ASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put

In sof_ipc4_bytes_put(), the copy size is derived from the old data->size in the buffer rather than the incoming new data's size field from ucontrol. If the new data has a different size, the copy uses the wrong length: it may truncate valid data or copy stale bytes.

Fix by validating and using the incoming data's sof_abi_hdr.size from ucontrol before copying.

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-2026-72304"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:03Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put\n\nIn sof_ipc4_bytes_put(), the copy size is derived from the old\ndata-\u003esize in the buffer rather than the incoming new data\u0027s size\nfield from ucontrol. If the new data has a different size, the copy\nuses the wrong length: it may truncate valid data or copy stale bytes.\n\nFix by validating and using the incoming data\u0027s sof_abi_hdr.size from\nucontrol before copying.",
  "id": "GHSA-p327-qw84-66rm",
  "modified": "2026-08-17T06:33:22Z",
  "published": "2026-08-15T06:32:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72304"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/038406abde0d0883419ec89425ea941ec8bbef95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/266f936db83aee6ca6473bbb06259bda52bf4fc3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ad673e7139cf214afd24321a829aad6575f4163"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4cf6a7ebbf8787393b158b2cc341723e5bebc4a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb4293173db2d474d8fbc0e5ecf4943e6df2b40e"
    }
  ],
  "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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