net: sparx5: skip ptp deinit if init was skipped

{
  "id": "386e10717bde08e2ea28d42e02d3105c5cad4f8765fbe895ed117daeb134b6b7",
  "url": "https://osv.dev/vulnerability/CVE-2026-98795",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: sparx5: skip ptp deinit if init was skipped",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: sparx5: skip ptp deinit if init was skipped sparx5_ptp_init() returns early on the base lan969x variants because they do not have the SPX5_FEATURE_PTP flag. It also returns early when no \"ptp\" interrupt is described. Unbinding the driver then causes a NULL pointer dereference when cleaning up uninitialized tx_skbs queues: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 Call trace: skb_queue_purge_reason+0x68/0x120 (P) sparx5_ptp_deinit+0x64/0xc0 mchp_sparx5_remove+0x38/0x70 platform_remove+0x20/0x30 device_remove+0x4c/0x80 Before per-port tx_skbs were added, a NULL dereference would have happened when calling ptp_clock_unregister() on the never-registered PTP clocks. Fix by returning early in sparx5_ptp_deinit() if PTP is not used.",
    "evidence": "osv:CVE-2026-98795",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.56",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98795",
      "aliases": [
        "CVE-2026-98795"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff"
                },
                {
                  "fixed": "35c706d6eb1963735814c5f5bb2674a96eacf3cc"
                },
                {
                  "fixed": "2879b65bfa548e10d59c5fba91d17f8a00cd7029"
                },
                {
                  "fixed": "0d2c49915bc3aea4521cda5e4d42f24f63b94585"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98795.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.18.0"
                },
                {
                  "fixed": "6.18.56"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98795.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.716035241Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0d2c49915bc3aea4521cda5e4d42f24f63b94585",
        "https://git.kernel.org/stable/c/2879b65bfa548e10d59c5fba91d17f8a00cd7029",
        "https://git.kernel.org/stable/c/35c706d6eb1963735814c5f5bb2674a96eacf3cc",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98795.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98795",
        "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-2026-98795.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98795",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 500058,
  "published_at": "2026-10-18T15:48:39.633+00:00"
}