wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()

{
  "id": "afb569a45694acb1fa29d73aabb9f06c9491dba2602c803c54cc2e9c9a513e73",
  "url": "https://osv.dev/vulnerability/CVE-2024-46755",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id() mwifiex_get_priv_by_id() returns the priv pointer corresponding to the bss_num and bss_type, but without checking if the priv is actually currently in use. Unused priv pointers do not have a wiphy attached to them which can lead to NULL pointer dereferences further down the callstack. Fix this by returning only used priv pointers which have priv->bss_mode set to something else than NL80211_IFTYPE_UNSPECIFIED. Said NULL pointer dereference happened when an Accesspoint was started with wpa_supplicant -i mlan0 with this config: network={ ssid=\"somessid\" mode=2 frequency=2412 key_mgmt=WPA-PSK WPA-PSK-SHA256 proto=RSN group=CCMP pairwise=CCMP psk=\"12345678\" } When waiting for the AP to be established, interrupting wpa_supplicant with and starting it again this happens: | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000140 | Mem abort info: | ESR = 0x0000000096000004 | EC = 0x25: DABT (current EL), IL = 32 bits | SET = 0, FnV = 0 | EA = 0, S1PTW = 0 | FSC = 0x04: level 0 translation fault | Data abort info: | ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 | CM = 0, WnR = 0, TnD = 0, TagAccess = 0 | GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 | user pgtable: 4k pages, 48-bit VAs, pgdp=0000000046d96000 | [0000000000000140] pgd=0000000000000000, p4d=0000000000000000 | Internal error: Oops: 0000000096000004 [#1] PREEMPT S",
    "evidence": "osv:CVE-2024-46755",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.19.322",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.284",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.226",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.167",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.51",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.10.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-46755",
      "aliases": [
        "CVE-2024-46755"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "93a1df48d224296fb527d32fbec4d5162828feb4"
                },
                {
                  "fixed": "a12cf97cbefa139ef8d95081f2ea047cbbd74b7a"
                },
                {
                  "fixed": "d834433ff313838a259bb6607055ece87b895b66"
                },
                {
                  "fixed": "9813770f25855b866b8ead8155b8806b2db70f6d"
                },
                {
                  "fixed": "cb67b2e51b75f1a17bee7599c8161b96e1808a70"
                },
                {
                  "fixed": "1a05d8d02cfa3540ea5dbd6b39446bd3f515521f"
                },
                {
                  "fixed": "c2618dcb26c7211342b54520b5b148c0d3471c8a"
                },
                {
                  "fixed": "c16916dd6c16fa7e13ca3923eb6b9f50d848ad03"
                },
                {
                  "fixed": "c145eea2f75ff7949392aebecf7ef0a81c1f6c14"
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              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-46755.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.2.0"
                },
                {
                  "fixed": "4.19.322"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
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                  "introduced": "4.20.0"
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            {
              "type": "ECOSYSTEM",
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                {
                  "introduced": "5.5.0"
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                {
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            {
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                  "introduced": "5.11.0"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "5.16.0"
                },
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                  "fixed": "6.1.110"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.51"
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              ]
            },
            {
              "type": "ECOSYSTEM",
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                  "introduced": "6.7.0"
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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-2024-46755.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.805248059Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1a05d8d02cfa3540ea5dbd6b39446bd3f515521f",
        "https://git.kernel.org/stable/c/9813770f25855b866b8ead8155b8806b2db70f6d",
        "https://git.kernel.org/stable/c/a12cf97cbefa139ef8d95081f2ea047cbbd74b7a",
        "https://git.kernel.org/stable/c/c145eea2f75ff7949392aebecf7ef0a81c1f6c14",
        "https://git.kernel.org/stable/c/c16916dd6c16fa7e13ca3923eb6b9f50d848ad03",
        "https://git.kernel.org/stable/c/c2618dcb26c7211342b54520b5b148c0d3471c8a",
        "https://git.kernel.org/stable/c/cb67b2e51b75f1a17bee7599c8161b96e1808a70",
        "https://git.kernel.org/stable/c/d834433ff313838a259bb6607055ece87b895b66",
        "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46755.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-46755",
        "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/2024/46xxx/CVE-2024-46755.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-46755",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488910,
  "published_at": "2024-09-18T07:12:14.82+00:00"
}