GHSA-MWHG-GWRR-FF82

Vulnerability from github – Published: 2025-09-23 06:30 – Updated: 2026-01-20 21:31
VLAI?
Details

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

dmaengine: ti: edma: Fix memory allocation size for queue_priority_map

Fix a critical memory allocation bug in edma_setup_from_hw() where queue_priority_map was allocated with insufficient memory. The code declared queue_priority_map as s8 (*)[2] (pointer to array of 2 s8), but allocated memory using sizeof(s8) instead of the correct size.

This caused out-of-bounds memory writes when accessing: queue_priority_map[i][0] = i; queue_priority_map[i][1] = i;

The bug manifested as kernel crashes with "Oops - undefined instruction" on ARM platforms (BeagleBoard-X15) during EDMA driver probe, as the memory corruption triggered kernel hardening features on Clang.

Change the allocation to use sizeof(*queue_priority_map) which automatically gets the correct size for the 2D array structure.

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-2025-39869"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-23T06:15:46Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: ti: edma: Fix memory allocation size for queue_priority_map\n\nFix a critical memory allocation bug in edma_setup_from_hw() where\nqueue_priority_map was allocated with insufficient memory. The code\ndeclared queue_priority_map as s8 (*)[2] (pointer to array of 2 s8),\nbut allocated memory using sizeof(s8) instead of the correct size.\n\nThis caused out-of-bounds memory writes when accessing:\n  queue_priority_map[i][0] = i;\n  queue_priority_map[i][1] = i;\n\nThe bug manifested as kernel crashes with \"Oops - undefined instruction\"\non ARM platforms (BeagleBoard-X15) during EDMA driver probe, as the\nmemory corruption triggered kernel hardening features on Clang.\n\nChange the allocation to use sizeof(*queue_priority_map) which\nautomatically gets the correct size for the 2D array structure.",
  "id": "GHSA-mwhg-gwrr-ff82",
  "modified": "2026-01-20T21:31:30Z",
  "published": "2025-09-23T06:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39869"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/069fd1688c57c0cc8a3de64d108579b31676f74b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1baed10553fc8b388351d8fc803e3ae6f1a863bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/301a96cc4dc006c9a285913d301e681cfbf7edb6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5e462fa0dfdb52b3983cf41532d3d4c7d63e2f93"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d4de60d6db02d9b01d5890d5156b04fad65d07a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5e82f3f2c918d446df46e8d65f8083fd97cdec5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d722de80ce037dccf6931e778f4a46499d51bdf9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e63419dbf2ceb083c1651852209c7f048089ac0f"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "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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