net: netdevsim: don't try to destroy PHC on VFs

{
  "id": "12fc347677c7565caacd7c8b7eb612e55f3c22aafb051a540e9288a9ac9301fa",
  "url": "https://osv.dev/vulnerability/CVE-2024-26587",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: netdevsim: don't try to destroy PHC on VFs",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: netdevsim: don't try to destroy PHC on VFs PHC gets initialized in nsim_init_netdevsim(), which is only called if (nsim_dev_port_is_pf()). Create a counterpart of nsim_init_netdevsim() and move the mock_phc_destroy() there. This fixes a crash trying to destroy netdevsim with VFs instantiated, as caught by running the devlink.sh test: BUG: kernel NULL pointer dereference, address: 00000000000000b8 RIP: 0010:mock_phc_destroy+0xd/0x30 Call Trace: nsim_destroy+0x4a/0x70 [netdevsim] __nsim_dev_port_del+0x47/0x70 [netdevsim] nsim_dev_reload_destroy+0x105/0x120 [netdevsim] nsim_drv_remove+0x2f/0xb0 [netdevsim] device_release_driver_internal+0x1a1/0x210 bus_remove_device+0xd5/0x120 device_del+0x159/0x490 device_unregister+0x12/0x30 del_device_store+0x11a/0x1a0 [netdevsim] kernfs_fop_write_iter+0x130/0x1d0 vfs_write+0x30b/0x4b0 ksys_write+0x69/0xf0 do_syscall_64+0xcc/0x1e0 entry_SYSCALL_64_after_hwframe+0x6f/0x77",
    "evidence": "osv:CVE-2024-26587",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.14",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.7.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-26587",
      "aliases": [
        "CVE-2024-26587"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b63e78fca889e07931ec8f259701718a24e5052e"
                },
                {
                  "fixed": "08aca65997fb6f233066883b1f1e653bcb1f26ca"
                },
                {
                  "fixed": "c5068e442eed063d2f1658e6b6d3c1c6fcf1e588"
                },
                {
                  "fixed": "ea937f77208323d35ffe2f8d8fc81b00118bfcda"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26587.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.6.0"
                },
                {
                  "fixed": "6.6.14"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.7.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26587.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.113753728Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/08aca65997fb6f233066883b1f1e653bcb1f26ca",
        "https://git.kernel.org/stable/c/c5068e442eed063d2f1658e6b6d3c1c6fcf1e588",
        "https://git.kernel.org/stable/c/ea937f77208323d35ffe2f8d8fc81b00118bfcda",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26587.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-26587",
        "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/2024/26xxx/CVE-2024-26587.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-26587",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 496925,
  "published_at": "2024-02-22T16:13:32.442+00:00"
}