wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet

{
  "id": "44b3e867b7a0ff4696772c2ca1136abdee7483387d0ce56bf0cba8311c6ba4ee",
  "url": "https://osv.dev/vulnerability/CVE-2026-53112",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet The irq_prepare_bcn_tasklet is initialized in rtl_pci_init() and scheduled when RTL_IMR_BCNINT interrupt is triggered by hardware. But it is never killed in rtl_pci_deinit(). When the rtlwifi card probe fails or is being detached, the ieee80211_hw is deallocated. However, irq_prepare_bcn_tasklet may still be running or pending, leading to use-after-free when the freed ieee80211_hw is accessed in _rtl_pci_prepare_bcn_tasklet(). Similar to irq_tasklet, add tasklet_kill() in rtl_pci_deinit() to ensure that irq_prepare_bcn_tasklet is properly terminated before the ieee80211_hw is released. The issue was identified through static analysis.",
    "evidence": "osv:CVE-2026-53112",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.258",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.209",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.175",
            "evidence": "/affected/1/ranges"
          },
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            "value": "6.6.141",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.91",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.33",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.0.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-53112",
      "aliases": [
        "CVE-2026-53112"
      ],
      "affected": [
        {
          "ranges": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                {
                  "fixed": "fac1079e0fdec6df6d7562c21941587236dc3def"
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                {
                  "fixed": "e40873820c9d245ce482faa7ad514ebdb3b8d23d"
                },
                {
                  "fixed": "008c456b76e9070979bc0e763897a5d3b0fdd4dc"
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                {
                  "fixed": "7731b67bd59d1284d150cbe40a47e95a10613234"
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                  "fixed": "aa10a452e34810987fb9f4a047995b30003fb53f"
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                  "fixed": "3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b"
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          }
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        {
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              "type": "ECOSYSTEM",
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                  "introduced": "2.6.38"
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                  "introduced": "6.19.0"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53112.json"
          }
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      ],
      "modified": "2026-10-28T02:30:36.827939053Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc",
        "https://git.kernel.org/stable/c/039cd522dc70151da13329a5e3ae19b1736f468a",
        "https://git.kernel.org/stable/c/3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b",
        "https://git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234",
        "https://git.kernel.org/stable/c/aa10a452e34810987fb9f4a047995b30003fb53f",
        "https://git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e",
        "https://git.kernel.org/stable/c/e40873820c9d245ce482faa7ad514ebdb3b8d23d",
        "https://git.kernel.org/stable/c/fac1079e0fdec6df6d7562c21941587236dc3def",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53112.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53112",
        "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/2026/53xxx/CVE-2026-53112.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-53112",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 504057,
  "published_at": "2026-06-24T16:30:45.359+00:00"
}