Vulnerability-Lookup

GHSA-J8WH-H47X-6XR8

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-06-24 18:32

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53112"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:25Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-j8wh-h47x-6xr8",
  "modified": "2026-06-24T18:32:47Z",
  "published": "2026-06-24T18:32:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53112"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/039cd522dc70151da13329a5e3ae19b1736f468a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa10a452e34810987fb9f4a047995b30003fb53f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e40873820c9d245ce482faa7ad514ebdb3b8d23d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fac1079e0fdec6df6d7562c21941587236dc3def"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-53112 (GCVE-0-2026-53112)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:30 – Updated: 2026-06-24 16:30

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.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/ae10d4a1ab6bcaa13…
https://git.kernel.org/stable/c/fac1079e0fdec6df6…
https://git.kernel.org/stable/c/e40873820c9d245ce…
https://git.kernel.org/stable/c/008c456b76e907097…
https://git.kernel.org/stable/c/7731b67bd59d1284d…
https://git.kernel.org/stable/c/aa10a452e34810987…
https://git.kernel.org/stable/c/3c0e8a3179e6325a7…
https://git.kernel.org/stable/c/039cd522dc70151da…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0c8173385e549f95cd80c3fff5aab87b4f881d8d , < ae10d4a1ab6bcaa1336abb171908a9a365761d3e (git) Affected: 0c8173385e549f95cd80c3fff5aab87b4f881d8d , < fac1079e0fdec6df6d7562c21941587236dc3def (git) Affected: 0c8173385e549f95cd80c3fff5aab87b4f881d8d , < e40873820c9d245ce482faa7ad514ebdb3b8d23d (git) Affected: 0c8173385e549f95cd80c3fff5aab87b4f881d8d , < 008c456b76e9070979bc0e763897a5d3b0fdd4dc (git) Affected: 0c8173385e549f95cd80c3fff5aab87b4f881d8d , < 7731b67bd59d1284d150cbe40a47e95a10613234 (git) Affected: 0c8173385e549f95cd80c3fff5aab87b4f881d8d , < aa10a452e34810987fb9f4a047995b30003fb53f (git) Affected: 0c8173385e549f95cd80c3fff5aab87b4f881d8d , < 3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b (git) Affected: 0c8173385e549f95cd80c3fff5aab87b4f881d8d , < 039cd522dc70151da13329a5e3ae19b1736f468a (git)
Linux	Linux	Affected: 2.6.38 Unaffected: 0 , < 2.6.38 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtlwifi/pci.c"
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            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
              "lessThan": "7731b67bd59d1284d150cbe40a47e95a10613234",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "status": "affected",
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              "versionType": "git"
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          ]
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        {
          "defaultStatus": "affected",
          "product": "Linux",
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            "drivers/net/wireless/realtek/rtlwifi/pci.c"
          ],
          "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"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
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                },
                {
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.10",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
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          "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"
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          "url": "https://git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc"
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        {
          "url": "https://git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234"
        },
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          "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": {
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    "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"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-J8WH-H47X-6XR8

CVE-2026-53112 (GCVE-0-2026-53112)

Tags

Sightings

Nomenclature