CVE-2026-53112 (GCVE-0-2026-53112)
Vulnerability from cvelistv5
Published
2026-06-24 16:30
Modified
2026-06-24 16:30
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0c8173385e549f95cd80c3fff5aab87b4f881d8d
Version: 0c8173385e549f95cd80c3fff5aab87b4f881d8d
Version: 0c8173385e549f95cd80c3fff5aab87b4f881d8d
Version: 0c8173385e549f95cd80c3fff5aab87b4f881d8d
Version: 0c8173385e549f95cd80c3fff5aab87b4f881d8d
Version: 0c8173385e549f95cd80c3fff5aab87b4f881d8d
Version: 0c8173385e549f95cd80c3fff5aab87b4f881d8d
Version: 0c8173385e549f95cd80c3fff5aab87b4f881d8d
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtlwifi/pci.c"
          ],
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          "versions": [
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.38"
            },
            {
              "lessThan": "2.6.38",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.91",
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            },
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              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
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              "version": "7.0.10",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet\n\nThe irq_prepare_bcn_tasklet is initialized in rtl_pci_init() and\nscheduled when RTL_IMR_BCNINT interrupt is triggered by hardware.\nBut it is never killed in rtl_pci_deinit(). When the rtlwifi card\nprobe fails or is being detached, the ieee80211_hw is deallocated.\nHowever, irq_prepare_bcn_tasklet may still be running or pending,\nleading to use-after-free when the freed ieee80211_hw is accessed\nin _rtl_pci_prepare_bcn_tasklet().\n\nSimilar to irq_tasklet, add tasklet_kill() in rtl_pci_deinit() to\nensure that irq_prepare_bcn_tasklet is properly terminated before\nthe ieee80211_hw is released.\n\nThe issue was identified through static analysis."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:30:45.359Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e"
        },
        {
          "url": "https://git.kernel.org/stable/c/fac1079e0fdec6df6d7562c21941587236dc3def"
        },
        {
          "url": "https://git.kernel.org/stable/c/e40873820c9d245ce482faa7ad514ebdb3b8d23d"
        },
        {
          "url": "https://git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa10a452e34810987fb9f4a047995b30003fb53f"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b"
        },
        {
          "url": "https://git.kernel.org/stable/c/039cd522dc70151da13329a5e3ae19b1736f468a"
        }
      ],
      "title": "wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53112",
    "datePublished": "2026-06-24T16:30:45.359Z",
    "dateReserved": "2026-06-09T07:44:35.385Z",
    "dateUpdated": "2026-06-24T16:30:45.359Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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