octeontx2-pf: mcs: Fix NULL pointer dereferences

{
  "id": "d881a3c673184d60b366768e609b6770a506837882363e697638adff55a3df35",
  "url": "https://osv.dev/vulnerability/CVE-2023-53595",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "octeontx2-pf: mcs: Fix NULL pointer dereferences",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: mcs: Fix NULL pointer dereferences When system is rebooted after creating macsec interface below NULL pointer dereference crashes occurred. This patch fixes those crashes by using correct order of teardown [ 3324.406942] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 3324.415726] Mem abort info: [ 3324.418510] ESR = 0x96000006 [ 3324.421557] EC = 0x25: DABT (current EL), IL = 32 bits [ 3324.426865] SET = 0, FnV = 0 [ 3324.429913] EA = 0, S1PTW = 0 [ 3324.433047] Data abort info: [ 3324.435921] ISV = 0, ISS = 0x00000006 [ 3324.439748] CM = 0, WnR = 0 .... [ 3324.575915] Call trace: [ 3324.578353] cn10k_mdo_del_secy+0x24/0x180 [ 3324.582440] macsec_common_dellink+0xec/0x120 [ 3324.586788] macsec_notify+0x17c/0x1c0 [ 3324.590529] raw_notifier_call_chain+0x50/0x70 [ 3324.594965] call_netdevice_notifiers_info+0x34/0x7c [ 3324.599921] rollback_registered_many+0x354/0x5bc [ 3324.604616] unregister_netdevice_queue+0x88/0x10c [ 3324.609399] unregister_netdev+0x20/0x30 [ 3324.613313] otx2_remove+0x8c/0x310 [ 3324.616794] pci_device_shutdown+0x30/0x70 [ 3324.620882] device_shutdown+0x11c/0x204 [ 966.664930] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 966.673712] Mem abort info: [ 966.676497] ESR = 0x96000006 [ 966.679543] EC = 0x25: DABT (current EL), IL = 32 bits [ 966.684848] SET = 0, FnV = 0 [ 966.687895] EA = 0, S1PTW = ",
    "evidence": "osv:CVE-2023-53595",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.29",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-53595",
      "aliases": [
        "CVE-2023-53595"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c54ffc73601c0a239e55911923a6e23a2a74f143"
                },
                {
                  "fixed": "a3dcc45eca017fca82ac47dbde6f41af960657e5"
                },
                {
                  "fixed": "1152c0f947b76e7731e039185cbd00fdb4389f00"
                },
                {
                  "fixed": "13ff119b17e5e2916435ce01a0156c8698ad9e16"
                },
                {
                  "fixed": "699af748c61574125d269db260dabbe20436d74e"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53595.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.0"
                },
                {
                  "fixed": "6.1.29"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.3.0"
                },
                {
                  "fixed": "6.3.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53595.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.433854400Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1152c0f947b76e7731e039185cbd00fdb4389f00",
        "https://git.kernel.org/stable/c/13ff119b17e5e2916435ce01a0156c8698ad9e16",
        "https://git.kernel.org/stable/c/699af748c61574125d269db260dabbe20436d74e",
        "https://git.kernel.org/stable/c/a3dcc45eca017fca82ac47dbde6f41af960657e5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53595.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53595",
        "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/2023/53xxx/CVE-2023-53595.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53595",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 496018,
  "published_at": "2025-10-04T15:44:08.261+00:00"
}