Vulnerability-Lookup

FKIE_CVE-2026-80939

Vulnerability from fkie_nvd - Published: 2026-09-11 20:18 - Updated: 2026-09-14 13:18

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: pci: add .shutdown callback to stop rfkill polling on reboot Since the hardware rfkill polling was introduced, arm64 platforms can panic with an asynchronous SError during warm reboot: SError Interrupt on CPU8, code 0x00000000be000011 -- SError Workqueue: events_power_efficient rfkill_poll [rfkill] rtw89_pci_ops_read8+0x94/0x160 [rtw89_pci] rtw89_core_rfkill_poll+0x50/0x1e0 [rtw89_core] rtw89_ops_rfkill_poll+0x40/0x68 [rtw89_core] ieee80211_rfkill_poll+0x3c/0x70 [mac80211] cfg80211_rfkill_poll+0x40/0x2a0 [cfg80211] rfkill_poll+0x30/0x88 [rfkill] Kernel panic - not syncing: Asynchronous SError Interrupt On the reboot path the kernel only runs device_shutdown(), which calls each driver's .shutdown callback; .remove is not invoked. The rtw89 PCI driver had no .shutdown callback, so nothing stopped the rfkill polling work while the platform was tearing the PCIe link down. Once the link is gone, the next MMIO read from the poll handler targets a non-responding device and is reported as a fatal asynchronous SError on arm64. Add rtw89_pci_shutdown(), wired to all rtw89 PCI device drivers, which sets a new RTW89_FLAG_SHUTDOWN flag (mirroring the USB RTW89_FLAG_UNPLUGGED pattern). When the flag is set, rtw89_ops_rfkill_poll() returns early, so no MMIO read is issued to the chip after shutdown begins and the SError no longer occurs. This does not call the full .remove path from .shutdown, to keep the shutdown handler minimal and avoid running the non-idempotent teardown twice.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/667c12782aaf8dd3cb2213e528fe63a73cb63345
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9693980cd7d2f5b17e5ef5922b922f2e1a770fca
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c1f214dd1351244156deb57761b14190a233aef6

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/core.h",
            "drivers/net/wireless/realtek/rtw89/mac80211.c",
            "drivers/net/wireless/realtek/rtw89/pci.c",
            "drivers/net/wireless/realtek/rtw89/pci.h",
            "drivers/net/wireless/realtek/rtw89/rtw8851be.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852ae.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852be.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852bte.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852ce.c",
            "drivers/net/wireless/realtek/rtw89/rtw8922ae.c",
            "drivers/net/wireless/realtek/rtw89/rtw8922de.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9693980cd7d2f5b17e5ef5922b922f2e1a770fca",
              "status": "affected",
              "version": "0b38e6277aed8a59ccb64fcc1172d962c1f11b4c",
              "versionType": "git"
            },
            {
              "lessThan": "c1f214dd1351244156deb57761b14190a233aef6",
              "status": "affected",
              "version": "0b38e6277aed8a59ccb64fcc1172d962c1f11b4c",
              "versionType": "git"
            },
            {
              "lessThan": "667c12782aaf8dd3cb2213e528fe63a73cb63345",
              "status": "affected",
              "version": "0b38e6277aed8a59ccb64fcc1172d962c1f11b4c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/core.h",
            "drivers/net/wireless/realtek/rtw89/mac80211.c",
            "drivers/net/wireless/realtek/rtw89/pci.c",
            "drivers/net/wireless/realtek/rtw89/pci.h",
            "drivers/net/wireless/realtek/rtw89/rtw8851be.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852ae.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852be.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852bte.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852ce.c",
            "drivers/net/wireless/realtek/rtw89/rtw8922ae.c",
            "drivers/net/wireless/realtek/rtw89/rtw8922de.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: pci: add .shutdown callback to stop rfkill polling on reboot\n\nSince the hardware rfkill polling was introduced, arm64 platforms can\npanic with an asynchronous SError during warm reboot:\n\n  SError Interrupt on CPU8, code 0x00000000be000011 -- SError\n  Workqueue: events_power_efficient rfkill_poll [rfkill]\n    rtw89_pci_ops_read8+0x94/0x160 [rtw89_pci]\n    rtw89_core_rfkill_poll+0x50/0x1e0 [rtw89_core]\n    rtw89_ops_rfkill_poll+0x40/0x68 [rtw89_core]\n    ieee80211_rfkill_poll+0x3c/0x70 [mac80211]\n    cfg80211_rfkill_poll+0x40/0x2a0 [cfg80211]\n    rfkill_poll+0x30/0x88 [rfkill]\n  Kernel panic - not syncing: Asynchronous SError Interrupt\n\nOn the reboot path the kernel only runs device_shutdown(), which calls\neach driver\u0027s .shutdown callback; .remove is not invoked.  The rtw89 PCI\ndriver had no .shutdown callback, so nothing stopped the rfkill polling\nwork while the platform was tearing the PCIe link down.  Once the link\nis gone, the next MMIO read from the poll handler targets a\nnon-responding device and is reported as a fatal asynchronous SError on\narm64.\n\nAdd rtw89_pci_shutdown(), wired to all rtw89 PCI device drivers, which\nsets a new RTW89_FLAG_SHUTDOWN flag (mirroring the USB\nRTW89_FLAG_UNPLUGGED pattern).  When the flag is set,\nrtw89_ops_rfkill_poll() returns early, so no MMIO read is issued to the\nchip after shutdown begins and the SError no longer occurs.\n\nThis does not call the full .remove path from .shutdown, to keep the\nshutdown handler minimal and avoid running the non-idempotent teardown\ntwice."
    }
  ],
  "id": "CVE-2026-80939",
  "lastModified": "2026-09-14T13:18:50.037",
  "metrics": {},
  "published": "2026-09-11T20:18:58.553",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/667c12782aaf8dd3cb2213e528fe63a73cb63345"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9693980cd7d2f5b17e5ef5922b922f2e1a770fca"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c1f214dd1351244156deb57761b14190a233aef6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-80939 (GCVE-0-2026-80939)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:42 – Updated: 2026-09-14 11:59

Title

wifi: rtw89: pci: add .shutdown callback to stop rfkill polling on reboot

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/9693980cd7d2f5b17…
https://git.kernel.org/stable/c/c1f214dd135124415…
https://git.kernel.org/stable/c/667c12782aaf8dd3c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0b38e6277aed8a59ccb64fcc1172d962c1f11b4c , < 9693980cd7d2f5b17e5ef5922b922f2e1a770fca (git) Affected: 0b38e6277aed8a59ccb64fcc1172d962c1f11b4c , < c1f214dd1351244156deb57761b14190a233aef6 (git) Affected: 0b38e6277aed8a59ccb64fcc1172d962c1f11b4c , < 667c12782aaf8dd3cb2213e528fe63a73cb63345 (git)
Linux	Linux	Affected: 6.12 Unaffected: 0 , < 6.12 (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/core.h",
            "drivers/net/wireless/realtek/rtw89/mac80211.c",
            "drivers/net/wireless/realtek/rtw89/pci.c",
            "drivers/net/wireless/realtek/rtw89/pci.h",
            "drivers/net/wireless/realtek/rtw89/rtw8851be.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852ae.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852be.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852bte.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852ce.c",
            "drivers/net/wireless/realtek/rtw89/rtw8922ae.c",
            "drivers/net/wireless/realtek/rtw89/rtw8922de.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9693980cd7d2f5b17e5ef5922b922f2e1a770fca",
              "status": "affected",
              "version": "0b38e6277aed8a59ccb64fcc1172d962c1f11b4c",
              "versionType": "git"
            },
            {
              "lessThan": "c1f214dd1351244156deb57761b14190a233aef6",
              "status": "affected",
              "version": "0b38e6277aed8a59ccb64fcc1172d962c1f11b4c",
              "versionType": "git"
            },
            {
              "lessThan": "667c12782aaf8dd3cb2213e528fe63a73cb63345",
              "status": "affected",
              "version": "0b38e6277aed8a59ccb64fcc1172d962c1f11b4c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/core.h",
            "drivers/net/wireless/realtek/rtw89/mac80211.c",
            "drivers/net/wireless/realtek/rtw89/pci.c",
            "drivers/net/wireless/realtek/rtw89/pci.h",
            "drivers/net/wireless/realtek/rtw89/rtw8851be.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852ae.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852be.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852bte.c",
            "drivers/net/wireless/realtek/rtw89/rtw8852ce.c",
            "drivers/net/wireless/realtek/rtw89/rtw8922ae.c",
            "drivers/net/wireless/realtek/rtw89/rtw8922de.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: pci: add .shutdown callback to stop rfkill polling on reboot\n\nSince the hardware rfkill polling was introduced, arm64 platforms can\npanic with an asynchronous SError during warm reboot:\n\n  SError Interrupt on CPU8, code 0x00000000be000011 -- SError\n  Workqueue: events_power_efficient rfkill_poll [rfkill]\n    rtw89_pci_ops_read8+0x94/0x160 [rtw89_pci]\n    rtw89_core_rfkill_poll+0x50/0x1e0 [rtw89_core]\n    rtw89_ops_rfkill_poll+0x40/0x68 [rtw89_core]\n    ieee80211_rfkill_poll+0x3c/0x70 [mac80211]\n    cfg80211_rfkill_poll+0x40/0x2a0 [cfg80211]\n    rfkill_poll+0x30/0x88 [rfkill]\n  Kernel panic - not syncing: Asynchronous SError Interrupt\n\nOn the reboot path the kernel only runs device_shutdown(), which calls\neach driver\u0027s .shutdown callback; .remove is not invoked.  The rtw89 PCI\ndriver had no .shutdown callback, so nothing stopped the rfkill polling\nwork while the platform was tearing the PCIe link down.  Once the link\nis gone, the next MMIO read from the poll handler targets a\nnon-responding device and is reported as a fatal asynchronous SError on\narm64.\n\nAdd rtw89_pci_shutdown(), wired to all rtw89 PCI device drivers, which\nsets a new RTW89_FLAG_SHUTDOWN flag (mirroring the USB\nRTW89_FLAG_UNPLUGGED pattern).  When the flag is set,\nrtw89_ops_rfkill_poll() returns early, so no MMIO read is issued to the\nchip after shutdown begins and the SError no longer occurs.\n\nThis does not call the full .remove path from .shutdown, to keep the\nshutdown handler minimal and avoid running the non-idempotent teardown\ntwice."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T11:59:03.269Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9693980cd7d2f5b17e5ef5922b922f2e1a770fca"
        },
        {
          "url": "https://git.kernel.org/stable/c/c1f214dd1351244156deb57761b14190a233aef6"
        },
        {
          "url": "https://git.kernel.org/stable/c/667c12782aaf8dd3cb2213e528fe63a73cb63345"
        }
      ],
      "title": "wifi: rtw89: pci: add .shutdown callback to stop rfkill polling on reboot",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80939",
    "datePublished": "2026-09-11T19:42:12.340Z",
    "dateReserved": "2026-08-26T14:34:25.803Z",
    "dateUpdated": "2026-09-14T11:59:03.269Z",
    "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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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