GHSA-6C2Q-RQ6R-4JJX

Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31
VLAI
Details

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

dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA

When terminating DMA transfers, active descriptors are not properly reclaimed. Only cyclic descriptors were handled, leaving non-cyclic descriptors and their LLI chains to be permanently leaked.

Fix by using vchan_terminate_vdesc() which handles both cyclic and non-cyclic descriptors by adding them to desc_terminated queue for proper cleanup.

Add pchan->desc != pchan->done check to prevent double-adding completed descriptors, which would corrupt the list.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80902"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T18:17:59Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA\n\nWhen terminating DMA transfers, active descriptors are not properly\nreclaimed. Only cyclic descriptors were handled, leaving non-cyclic\ndescriptors and their LLI chains to be permanently leaked.\n\nFix by using vchan_terminate_vdesc() which handles both cyclic and\nnon-cyclic descriptors by adding them to desc_terminated queue for\nproper cleanup.\n\nAdd pchan-\u003edesc != pchan-\u003edone check to prevent double-adding completed\ndescriptors, which would corrupt the list.",
  "id": "GHSA-6c2q-rq6r-4jjx",
  "modified": "2026-09-04T18:31:34Z",
  "published": "2026-09-04T18:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80902"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/004a7a02982bed0a727a4ac7be400f00f353e7a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ccc5c059d067c5358682ad5352e7d7e9239ed9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27806fe7b9701af0963dcd510e30e7d0cc314c43"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9086b488f2737d5dcee86852b83f2059f1cdfabf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab1150115e68a46b687eb38c1ab92782018c9f2c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b150f603083cc8b72b0cbf13ec3e91f85b4390a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb87440561eb72b47a2b848b5373b86433b247e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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