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GHSA-CQ4J-9R28-WXQG

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33

Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw89: fix wrong pci_get_drvdata type in AER handlers

rtw89 stores an ieee80211_hw pointer via pci_set_drvdata() at probe time, but io_error_detected() and io_resume() retrieve it as a net_device pointer. This causes netif_device_detach/attach to operate on an ieee80211_hw struct, reading and writing at wrong offsets. The adjacent io_slot_reset() already does it correctly.

Use ieee80211_stop_queues/wake_queues instead, consistent with every other queue stop/start path in the driver.

Tested on RTL8852CE by calling the handlers from a test module before and after the fix.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74413"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:43Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: fix wrong pci_get_drvdata type in AER handlers\n\nrtw89 stores an ieee80211_hw pointer via pci_set_drvdata() at probe\ntime, but io_error_detected() and io_resume() retrieve it as a\nnet_device pointer.  This causes netif_device_detach/attach to\noperate on an ieee80211_hw struct, reading and writing at wrong\noffsets.  The adjacent io_slot_reset() already does it correctly.\n\nUse ieee80211_stop_queues/wake_queues instead, consistent with\nevery other queue stop/start path in the driver.\n\nTested on RTL8852CE by calling the handlers from a test module\nbefore and after the fix.",
  "id": "GHSA-cq4j-9r28-wxqg",
  "modified": "2026-08-17T06:33:44Z",
  "published": "2026-08-15T06:32:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74413"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7068c379cf9aa8afe4dce4d9d82390187aa9c4d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aefc30e4a829c1683f6ae999df7f9310c27eae6c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c1907b9a4fa9cb33d11a9af138374dd2e93f7a93"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-74413 (GCVE-0-2026-74413)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:59 – Updated: 2026-08-17 05:46

Title

wifi: rtw89: fix wrong pci_get_drvdata type in AER handlers

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: fix wrong pci_get_drvdata type in AER handlers rtw89 stores an ieee80211_hw pointer via pci_set_drvdata() at probe time, but io_error_detected() and io_resume() retrieve it as a net_device pointer. This causes netif_device_detach/attach to operate on an ieee80211_hw struct, reading and writing at wrong offsets. The adjacent io_slot_reset() already does it correctly. Use ieee80211_stop_queues/wake_queues instead, consistent with every other queue stop/start path in the driver. Tested on RTL8852CE by calling the handlers from a test module before and after the fix.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/aefc30e4a829c1683…
https://git.kernel.org/stable/c/c1907b9a4fa9cb33d…
https://git.kernel.org/stable/c/7068c379cf9aa8afe…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 16e3d93c6183649a3b210f82b83c1cb12aa5e8a3 , < aefc30e4a829c1683f6ae999df7f9310c27eae6c (git) Affected: 16e3d93c6183649a3b210f82b83c1cb12aa5e8a3 , < c1907b9a4fa9cb33d11a9af138374dd2e93f7a93 (git) Affected: 16e3d93c6183649a3b210f82b83c1cb12aa5e8a3 , < 7068c379cf9aa8afe4dce4d9d82390187aa9c4d0 (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "aefc30e4a829c1683f6ae999df7f9310c27eae6c",
              "status": "affected",
              "version": "16e3d93c6183649a3b210f82b83c1cb12aa5e8a3",
              "versionType": "git"
            },
            {
              "lessThan": "c1907b9a4fa9cb33d11a9af138374dd2e93f7a93",
              "status": "affected",
              "version": "16e3d93c6183649a3b210f82b83c1cb12aa5e8a3",
              "versionType": "git"
            },
            {
              "lessThan": "7068c379cf9aa8afe4dce4d9d82390187aa9c4d0",
              "status": "affected",
              "version": "16e3d93c6183649a3b210f82b83c1cb12aa5e8a3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: fix wrong pci_get_drvdata type in AER handlers\n\nrtw89 stores an ieee80211_hw pointer via pci_set_drvdata() at probe\ntime, but io_error_detected() and io_resume() retrieve it as a\nnet_device pointer.  This causes netif_device_detach/attach to\noperate on an ieee80211_hw struct, reading and writing at wrong\noffsets.  The adjacent io_slot_reset() already does it correctly.\n\nUse ieee80211_stop_queues/wake_queues instead, consistent with\nevery other queue stop/start path in the driver.\n\nTested on RTL8852CE by calling the handlers from a test module\nbefore and after the fix."
        }
      ],
      "metrics": [
        {
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            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The vulnerable rtw89 PCIe AER handlers run when the adapter reports non-fatal/fatal PCIe errors; on laptops with RTL8852CE/8852BE and similar in public wireless environments, an adjacent attacker can plausibly induce link faults via traffic stressing the radio-PCIe path.\nAC:L - Once AER recovery invokes rtw89_pci_io_error_detected/resume, the type confusion deterministically treats ieee80211_hw as net_device and corrupts memory through netif_device_detach/attach; no race or layout guesswork beyond triggering PCIe recovery is needed.\nPR:N - No local OS privileges or capabilities are required; an adjacent wireless attacker targeting a victim\u0027s rtw89 PCIe WiFi can enter the faulty AER recovery path without authenticating to or holding an account on the system.\nUI:N - No victim action beyond normal use of the affected rtw89 WiFi interface is required; PCIe AER recovery and the corruption run automatically in kernel interrupt/workqueue context.\nS:U - Type confusion corrupts kernel memory within the same kernel security authority; no VM, container, or IOMMU boundary is crossed.\nC:H - Casting ieee80211_hw to net_device makes netif_device_detach/attach read state, flags, and queue metadata at wrong offsets, constituting type confusion that can disclose adjacent kernel memory per kernel CVSS guidance.\nI:H - Atomic bit clears/sets and netif_tx_stop/wake queue operations run on ieee80211_hw memory misinterpreted as net_device fields, enabling out-of-bounds writes and exploitable memory corruption warranting High integrity impact.\nA:H - Misinterpreting ieee80211_hw as net_device leads netif_tx_stop_all_queues and netdev_watchdog_up to dereference garbage queue pointers, causing kernel oops/panic during AER recovery with High availability impact."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:46:57.094Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/aefc30e4a829c1683f6ae999df7f9310c27eae6c"
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          "url": "https://git.kernel.org/stable/c/c1907b9a4fa9cb33d11a9af138374dd2e93f7a93"
        },
        {
          "url": "https://git.kernel.org/stable/c/7068c379cf9aa8afe4dce4d9d82390187aa9c4d0"
        }
      ],
      "title": "wifi: rtw89: fix wrong pci_get_drvdata type in AER handlers",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74413",
    "datePublished": "2026-08-15T05:59:20.021Z",
    "dateReserved": "2026-08-15T05:44:03.893Z",
    "dateUpdated": "2026-08-17T05:46:57.094Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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GHSA-CQ4J-9R28-WXQG

CVE-2026-74413 (GCVE-0-2026-74413)

Tags

Sightings

Nomenclature