ghsa-mwhg-gwrr-ff82
Vulnerability from github
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.
{
"affected": [],
"aliases": [
"CVE-2025-39869"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-23T06:15:46Z",
"severity": null
},
"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": "2025-10-02T15:31:13Z",
"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"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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