net/mlx5: fw_tracer, return NULL on create error

{
  "id": "998ebf8cb7b5c54bff4d4dfdb029f048d0e0a512aa83cc6a88438e39168c9f3e",
  "url": "https://osv.dev/vulnerability/CVE-2026-74717",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net/mlx5: fw_tracer, return NULL on create error",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net/mlx5: fw_tracer, return NULL on create error Tracer creation can fail by returning either NULL or ERR_PTR. The return value is stored without a check on the device, and users treat ERR_PTR and NULL the same way. This also causes a crash in the core dump logic, which is missing the ERR_PTR check and ends up dereferencing it, as shown in the trace below. Switch tracer creation to return NULL on failure only, so callers only need a single NULL check. Internal error: Oops: 0000000096000006 [#1] SMP Modules linked in: mlx5_ib ib_uverbs ib_core ipv6 mlx5_core CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.19.7 #1 PREEMPT(none) Workqueue: mlx5_health0001:01:00.0 mlx5_fw_reporter_err_work [mlx5_core] pstate: a3400009 (NzCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : mlx5_fw_tracer_trigger_core_dump_general+0x58/0xe0 [mlx5_core] lr : mlx5_fw_tracer_trigger_core_dump_general+0x40/0xe0 [mlx5_core] sp : ffff800081cf3c40 x29: ffff800081cf3c90 x28: 0000000000000000 x27: 0000000000000000 x26: ffff000080018828 x25: 0000000000000000 x24: ffff000080304a05 x23: ffff800081cf3d80 x22: ffff0000847e01a0 x21: 0000000000000000 x20: ffff0000847e01a0 x19: ffffffffffffffa1 x18: ffff80008310bbf0 x17: ffff800080119650 x16: ffff80008010df54 x15: ffff80008010d4ac x14: ffff800079c202e4 x13: ffff80008002fe60 x12: ffff800080119650 x11: ffff80008010df54 x10: ffff80008010d4ac x9 : ffff800079c203d8 x8 : ffff800081cf3c88 x7 : 000000",
    "evidence": "osv:CVE-2026-74717",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.265",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.216",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.183",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.152",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.104",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.45",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-74717",
      "aliases": [
        "CVE-2026-74717"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "47fe0d2571e5b446a0f0b0c1d6b99f55e51f5cc0"
                },
                {
                  "fixed": "ee41ea49c4ab0e4015919f52ad23ec251d3b39d3"
                },
                {
                  "fixed": "04599570c3a18f9ae7aad36825eb46f3dcd2c4e3"
                },
                {
                  "fixed": "9a416f000285a94c1b723877547981dec8132434"
                },
                {
                  "fixed": "b1d6375b9a63c9dc7e5e780d3ea9b126fe30d6cb"
                },
                {
                  "fixed": "80094352bd40ba54a33731f9c22872493983ed6d"
                },
                {
                  "fixed": "4aafa600d93e9551c1f24e785d57cbd4adf021d5"
                },
                {
                  "fixed": "af39eb111ce6b5eba9c08513b62c4868eb7e7fd5"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74717.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.3.0"
                },
                {
                  "fixed": "5.10.265"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
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                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.183"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
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                  "introduced": "6.2.0"
                },
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                  "fixed": "6.6.152"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
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                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
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                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.19.0"
                },
                {
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              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74717.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.441452145Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/04599570c3a18f9ae7aad36825eb46f3dcd2c4e3",
        "https://git.kernel.org/stable/c/47fe0d2571e5b446a0f0b0c1d6b99f55e51f5cc0",
        "https://git.kernel.org/stable/c/4aafa600d93e9551c1f24e785d57cbd4adf021d5",
        "https://git.kernel.org/stable/c/80094352bd40ba54a33731f9c22872493983ed6d",
        "https://git.kernel.org/stable/c/9a416f000285a94c1b723877547981dec8132434",
        "https://git.kernel.org/stable/c/af39eb111ce6b5eba9c08513b62c4868eb7e7fd5",
        "https://git.kernel.org/stable/c/b1d6375b9a63c9dc7e5e780d3ea9b126fe30d6cb",
        "https://git.kernel.org/stable/c/ee41ea49c4ab0e4015919f52ad23ec251d3b39d3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74717.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-74717",
        "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/2026/74xxx/CVE-2026-74717.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-74717",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518036,
  "published_at": "2026-08-22T15:33:11.488+00:00"
}