wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit()

{
  "id": "233f206589f1b87e7b6b30b654aa94cf5a5f9a0a08b2a578b0068985dd0367de",
  "url": "https://osv.dev/vulnerability/CVE-2022-50408",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit() > ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb); may be schedule, and then complete before the line > ndev->stats.tx_bytes += skb->len; [ 46.912801] ================================================================== [ 46.920552] BUG: KASAN: use-after-free in brcmf_netdev_start_xmit+0x718/0x8c8 [brcmfmac] [ 46.928673] Read of size 4 at addr ffffff803f5882e8 by task systemd-resolve/328 [ 46.935991] [ 46.937514] CPU: 1 PID: 328 Comm: systemd-resolve Tainted: G O 5.4.199-[REDACTED] #1 [ 46.947255] Hardware name: [REDACTED] [ 46.954568] Call trace: [ 46.957037] dump_backtrace+0x0/0x2b8 [ 46.960719] show_stack+0x24/0x30 [ 46.964052] dump_stack+0x128/0x194 [ 46.967557] print_address_description.isra.0+0x64/0x380 [ 46.972877] __kasan_report+0x1d4/0x240 [ 46.976723] kasan_report+0xc/0x18 [ 46.980138] __asan_report_load4_noabort+0x18/0x20 [ 46.985027] brcmf_netdev_start_xmit+0x718/0x8c8 [brcmfmac] [ 46.990613] dev_hard_start_xmit+0x1bc/0xda0 [ 46.994894] sch_direct_xmit+0x198/0xd08 [ 46.998827] __qdisc_run+0x37c/0x1dc0 [ 47.002500] __dev_queue_xmit+0x1528/0x21f8 [ 47.006692] dev_queue_xmit+0x24/0x30 [ 47.010366] neigh_resolve_output+0x37c/0x678 [ 47.014734] ip_finish_output2+0x598/0x2458 [ 47.018927] __ip_finish_output+0x300/0x730 [ 47.023118] ip_output+0x2e0/0x430 [ 47.026530] ip_local_out+0x90/0x140 [ 47.030117] igmpv3_sendpack+0x14c/0x228 [",
    "evidence": "osv:CVE-2022-50408",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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          {
            "value": "5.15.75",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.19.17",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.3",
            "evidence": "/affected/1/ranges"
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        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-50408",
      "aliases": [
        "CVE-2022-50408"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
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                {
                  "fixed": "d79f4d903e14dde822c60b5fd3bedc5a289d25df"
                },
                {
                  "fixed": "49c742afd60f552fce7799287080db02bffe1db2"
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                {
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50408.json"
          }
        },
        {
          "ranges": [
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              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "3.9.0"
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            "ecosystem": "Linux"
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      "modified": "2026-10-28T02:30:24.146512168Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1613a7b24f1a7467cb727ba3ec77c9a808383560",
        "https://git.kernel.org/stable/c/232d59eca07f6ea27307022a33d226aff373bd02",
        "https://git.kernel.org/stable/c/27574a3f421c3a1694d0207f37c6bbf23d66978e",
        "https://git.kernel.org/stable/c/3f42faf6db431e04bf942d2ebe3ae88975723478",
        "https://git.kernel.org/stable/c/49c742afd60f552fce7799287080db02bffe1db2",
        "https://git.kernel.org/stable/c/c369836cff98d3877f98c98e15c0151462812d96",
        "https://git.kernel.org/stable/c/d79f4d903e14dde822c60b5fd3bedc5a289d25df",
        "https://git.kernel.org/stable/c/e01d96494a9de0f48b1167f0494f6d929fa773ed",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50408.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50408",
        "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/2022/50xxx/CVE-2022-50408.json"
      }
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    "related_cves": [
      {
        "value": "CVE-2022-50408",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 490330,
  "published_at": "2025-09-18T16:03:53.197+00:00"
}