accel/amdxdna: Fix NULL pointer dereference of mgmt_chann

{
  "id": "d358bd8d0422fffc04223b13cf5b64ed3304da4a20f47998d1f6f5cf1b363b1d",
  "url": "https://osv.dev/vulnerability/CVE-2026-23328",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "accel/amdxdna: Fix NULL pointer dereference of mgmt_chann",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix NULL pointer dereference of mgmt_chann mgmt_chann may be set to NULL if the firmware returns an unexpected error in aie2_send_mgmt_msg_wait(). This can later lead to a NULL pointer dereference in aie2_hw_stop(). Fix this by introducing a dedicated helper to destroy mgmt_chann and by adding proper NULL checks before accessing it.",
    "evidence": "osv:CVE-2026-23328",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.57",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-23328",
      "aliases": [
        "CVE-2026-23328"
      ],
      "affected": [
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              "type": "GIT",
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                  "fixed": "6b3546e3a8c664fb8b97f587fd268dc6e413d79b"
                },
                {
                  "fixed": "032ca7a9059c4ba6c329e0f1b442dab54dd9c3e5"
                },
                {
                  "fixed": "6270ee26e1edd862ea17e3eba148ca8fb2c99dc9"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23328.json"
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        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.14.0"
                },
                {
                  "fixed": "6.18.57"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
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                {
                  "fixed": "6.19.7"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23328.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.610930727Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/032ca7a9059c4ba6c329e0f1b442dab54dd9c3e5",
        "https://git.kernel.org/stable/c/6270ee26e1edd862ea17e3eba148ca8fb2c99dc9",
        "https://git.kernel.org/stable/c/6b3546e3a8c664fb8b97f587fd268dc6e413d79b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23328.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-23328",
        "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/2026/23xxx/CVE-2026-23328.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-23328",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 517715,
  "published_at": "2026-03-25T10:27:20.559+00:00"
}