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

Type: advisorySources: OSV

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.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.10.245, 5.15.194, 5.4.300, 6.1.153, 6.12.48, 6.16.8, 6.6.107
CVEs
CVE-2025-39869
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 19:23 UTC · Revision 1

Source evidence

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

core-osv · Original source

Published 23 Sept 2025, 06:00 UTC

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.

osv:CVE-2025-39869

Kernel

Fixed versions: 5.4.300, 5.10.245, 5.15.194, 6.1.153, 6.6.107, 6.12.48, 6.16.8

Complete source record
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  "url": "https://osv.dev/vulnerability/CVE-2025-39869",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "dmaengine: ti: edma: Fix memory allocation size for queue_priority_map",
    "summary": "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.",
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      "modified": "2026-10-28T02:30:31.510418449Z",
      "provider": "osv",
      "references": [
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        "https://git.kernel.org/stable/c/1baed10553fc8b388351d8fc803e3ae6f1a863bc",
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        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
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        "https://nvd.nist.gov/vuln/detail/CVE-2025-39869",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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  "source_id": "core-osv",
  "document_id": 498682,
  "published_at": "2025-09-23T06:00:43.852+00:00"
}