accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain

{
  "id": "da44984250f71bc1c4498dd5828820be7aff2b0b2d489fb7789cfc59fccb57ec",
  "url": "https://osv.dev/vulnerability/CVE-2026-98146",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain struct amdxdna_cmd_chain contains a flexible array annotated with __counted_by(command_count). Since the structure is stored in shared AMDXDNA_BO_SHARE memory, userspace can modify command_count concurrently. If command_count is changed to zero, the bounds check generated from __counted_by may fail and trigger a kernel panic. Remove __counted_by to avoid relying on the userspace-controlled command_count for the flexible array bounds check.",
    "evidence": "osv:CVE-2026-98146",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.53",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98146",
      "aliases": [
        "CVE-2026-98146"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "aac243092b707bb3018e951d470cc1a9bcbaba6c"
                },
                {
                  "fixed": "93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a"
                },
                {
                  "fixed": "52f3e086760a9a3e02a46a10b57caffd73b1c204"
                },
                {
                  "fixed": "b3709d354545e70388177500761f92d906c4dfd6"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98146.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.14.0"
                },
                {
                  "fixed": "6.18.53"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98146.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.493528885Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/52f3e086760a9a3e02a46a10b57caffd73b1c204",
        "https://git.kernel.org/stable/c/93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a",
        "https://git.kernel.org/stable/c/b3709d354545e70388177500761f92d906c4dfd6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98146.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98146",
        "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/2026/98xxx/CVE-2026-98146.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98146",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 520376,
  "published_at": "2026-09-25T10:36:20.303+00:00"
}