drm/v3d: Set DMA segment size to avoid debug warnings

{
  "id": "f5b7bfee448fb3d464b56158f8bdb02b9a8bb24bcd6487803dee4c13b5a3a531",
  "url": "https://osv.dev/vulnerability/CVE-2026-43302",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/v3d: Set DMA segment size to avoid debug warnings",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/v3d: Set DMA segment size to avoid debug warnings When using V3D rendering with CONFIG_DMA_API_DEBUG enabled, the kernel occasionally reports a segment size mismatch. This is because 'max_seg_size' is not set. The kernel defaults to 64K. setting 'max_seg_size' to the maximum will prevent 'debug_dma_map_sg()' from complaining about the over-mapping of the V3D segment length. DMA-API: v3d 1002000000.v3d: mapping sg segment longer than device claims to support [len=8290304] [max=65536] WARNING: CPU: 0 PID: 493 at kernel/dma/debug.c:1179 debug_dma_map_sg+0x330/0x388 CPU: 0 UID: 0 PID: 493 Comm: Xorg Not tainted 6.12.53-yocto-standard #1 Hardware name: Raspberry Pi 5 Model B Rev 1.0 (DT) pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_dma_map_sg+0x330/0x388 lr : debug_dma_map_sg+0x330/0x388 sp : ffff8000829a3ac0 x29: ffff8000829a3ac0 x28: 0000000000000001 x27: ffff8000813fe000 x26: ffffc1ffc0000000 x25: ffff00010fdeb760 x24: 0000000000000000 x23: ffff8000816a9bf0 x22: 0000000000000001 x21: 0000000000000002 x20: 0000000000000002 x19: ffff00010185e810 x18: ffffffffffffffff x17: 69766564206e6168 x16: 74207265676e6f6c x15: 20746e656d676573 x14: 20677320676e6970 x13: 5d34303334393134 x12: 0000000000000000 x11: 00000000000000c0 x10: 00000000000009c0 x9 : ffff8000800e0b7c x8 : ffff00010a315ca0 x7 : ffff8000816a5110 x6 : 0000000000000001 x5 : 000000000000002b x4 : 0000000000000002 x3 : 00000",
    "evidence": "osv:CVE-2026-43302",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.202",
            "evidence": "/affected/1/ranges"
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            "value": "6.1.165",
            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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          {
            "value": "6.18.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-43302",
      "aliases": [
        "CVE-2026-43302"
      ],
      "affected": [
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43302.json"
          }
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        {
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              "type": "ECOSYSTEM",
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43302.json"
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        }
      ],
      "modified": "2026-10-28T02:30:42.999250436Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0290934d30abe7c88e18140fd5184c3f386b1e44",
        "https://git.kernel.org/stable/c/14d0d6c8b4504a60cfeea74775ab2e0164019e65",
        "https://git.kernel.org/stable/c/225023e3619b81af6d8d0e680503fc2d68633023",
        "https://git.kernel.org/stable/c/2663ef70c6123b2232190f917275e5c3175f97d0",
        "https://git.kernel.org/stable/c/9eb018828b1b30dfba689c060735c50fc5b9f704",
        "https://git.kernel.org/stable/c/cf510785f74e74c54de40a43a955b7f844857487",
        "https://git.kernel.org/stable/c/db15f469a88d3bbeeaa9f8c9f5e74d856ba5d7d2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43302.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43302",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43302.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43302",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 510694,
  "published_at": "2026-05-08T13:11:22.886+00:00"
}