GHSA-3WCH-675Q-FGX7

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:

dmaengine: Fix possible use after free

In dma_release_channel(), check chan->device->privatecnt after call dma_chan_put(). However, dma_chan_put() call dma_device_put() which could release the last reference of the device if the DMA provider is already gone and hence free it.

Fixes it by moving dma_chan_put() after the check.

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-2026-72476"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:21Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: Fix possible use after free\n\nIn dma_release_channel(), check chan-\u003edevice-\u003eprivatecnt after call\ndma_chan_put(). However, dma_chan_put() call dma_device_put() which could\nrelease the last reference of the device if the DMA provider is already\ngone and hence free it.\n\nFixes it by moving dma_chan_put() after the check.",
  "id": "GHSA-3wch-675q-fgx7",
  "modified": "2026-08-17T06:33:32Z",
  "published": "2026-08-15T06:32:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72476"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0bc191050c3253da8ef4bfaf157c44efed6e22cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/329ec20a86091d2a6e5b4fe507545e7d678a22a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3b0240483dc977dbec4f3bc7a5383d4691ecb625"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/444f96066937f3fdf0e79b53289cff223c7d638b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5876f38b67a309c00628942cb25679749b53b397"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92f853f0645aebf1d05d333e97ab7c342ace1892"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9bdc8dce4068dadbdf7cf5ad6d4983e2afffedce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab438a9efb9042c79d2f8db28a326d55feb8591f"
    }
  ],
  "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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