Vulnerability-Lookup

FKIE_CVE-2022-49968

Vulnerability from fkie_nvd - Published: 2025-06-18 11:15 - Updated: 2026-08-04 10:18

Severity

8.0 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: ieee802154/adf7242: defer destroy_workqueue call There is a possible race condition (use-after-free) like below (FREE) | (USE) adf7242_remove | adf7242_channel cancel_delayed_work_sync | destroy_workqueue (1) | adf7242_cmd_rx | mod_delayed_work (2) | The root cause for this race is that the upper layer (ieee802154) is unaware of this detaching event and the function adf7242_channel can be called without any checks. To fix this, we can add a flag write at the beginning of adf7242_remove and add flag check in adf7242_channel. Or we can just defer the destructive operation like other commit 3e0588c291d6 ("hamradio: defer ax25 kfree after unregister_netdev") which let the ieee802154_unregister_hw() to handle the synchronization. This patch takes the second option. runs")

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	4.18
linux	linux_kernel	4.18
linux	linux_kernel	4.18
linux	linux_kernel	4.18
linux	linux_kernel	6.0
linux	linux_kernel	6.0
linux	linux_kernel	6.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ieee802154/adf7242.c"
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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154/adf7242: defer destroy_workqueue call\n\nThere is a possible race condition (use-after-free) like below\n\n  (FREE)                     |  (USE)\n  adf7242_remove             |  adf7242_channel\n   cancel_delayed_work_sync  |\n    destroy_workqueue (1)    |   adf7242_cmd_rx\n                             |    mod_delayed_work (2)\n                             |\n\nThe root cause for this race is that the upper layer (ieee802154) is\nunaware of this detaching event and the function adf7242_channel can\nbe called without any checks.\n\nTo fix this, we can add a flag write at the beginning of adf7242_remove\nand add flag check in adf7242_channel. Or we can just defer the\ndestructive operation like other commit 3e0588c291d6 (\"hamradio: defer\nax25 kfree after unregister_netdev\") which let the\nieee802154_unregister_hw() to handle the synchronization. This patch\ntakes the second option.\n\nruns\")"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ieee802154/adf7242: aplazar la llamada a destroy_workqueue Existe una posible condici\u00f3n de ejecuci\u00f3n (use-after-free) como la siguiente (FREE) | (USE) adf7242_remove | adf7242_channel cancel_delayed_work_sync | destroy_workqueue (1) | adf7242_cmd_rx | mod_delayed_work (2) | La causa ra\u00edz de esta ejecuci\u00f3n es que la capa superior (ieee802154) desconoce este evento de desconexi\u00f3n y la funci\u00f3n adf7242_channel se puede llamar sin ninguna comprobaci\u00f3n. Para solucionar esto, podemos a\u00f1adir una escritura de bandera al principio de adf7242_remove y a\u00f1adir la comprobaci\u00f3n de bandera en adf7242_channel. O podemos simplemente aplazar la operaci\u00f3n destructiva como en el commit 3e0588c291d6 (\"hamradio: defer ax25 kfree after unregister_netdev\"), que permite que ieee802154_unregister_hw() gestione la sincronizaci\u00f3n. Este parche utiliza la segunda opci\u00f3n."
    }
  ],
  "id": "CVE-2022-49968",
  "lastModified": "2026-08-04T10:18:01.260",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
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          "attackVector": "LOCAL",
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          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
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        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2025-06-18T11:15:24.123",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-362"
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          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2022-49968 (GCVE-0-2022-49968)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2026-08-05 08:56

Title

ieee802154/adf7242: defer destroy_workqueue call

Summary

Severity

8 (High)


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

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/dede80aaf01f4b6e8…
https://git.kernel.org/stable/c/bed12d7531df1417f…
https://git.kernel.org/stable/c/23a29932715ca43bc…
https://git.kernel.org/stable/c/9f8558c5c642c62c4…
https://git.kernel.org/stable/c/15f3b89bd521d5770…
https://git.kernel.org/stable/c/afe7116f6d3b88877…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 58e9683d14752debc6f22daf6b23e031787df31f , < dede80aaf01f4b6e8657d23726cb4a3da226ec4c (git) Affected: 58e9683d14752debc6f22daf6b23e031787df31f , < bed12d7531df1417fc92c691999ff95e03835008 (git) Affected: 58e9683d14752debc6f22daf6b23e031787df31f , < 23a29932715ca43bceb2eae1bdb770995afe7271 (git) Affected: 58e9683d14752debc6f22daf6b23e031787df31f , < 9f8558c5c642c62c450c98c99b7d18a709fff485 (git) Affected: 58e9683d14752debc6f22daf6b23e031787df31f , < 15f3b89bd521d5770d36a61fc04a77c293138ba6 (git) Affected: 58e9683d14752debc6f22daf6b23e031787df31f , < afe7116f6d3b888778ed6d95e3cf724767b9aedf (git) Affected: a2363e2d88bf50022ee643c49ee5d4f7e8c915ea (git) Affected: 4.17.19 , < 4.18 (semver)
Linux	Linux	Affected: 4.18 Unaffected: 0 , < 4.18 (semver) Unaffected: 4.19.258 , ≤ 4.19.* (semver) Unaffected: 5.4.213 , ≤ 5.4.* (semver) Unaffected: 5.10.142 , ≤ 5.10.* (semver) Unaffected: 5.15.66 , ≤ 5.15.* (semver) Unaffected: 5.19.8 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/net/ieee802154/adf7242.c"
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.142",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.66",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.8",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.17.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154/adf7242: defer destroy_workqueue call\n\nThere is a possible race condition (use-after-free) like below\n\n  (FREE)                     |  (USE)\n  adf7242_remove             |  adf7242_channel\n   cancel_delayed_work_sync  |\n    destroy_workqueue (1)    |   adf7242_cmd_rx\n                             |    mod_delayed_work (2)\n                             |\n\nThe root cause for this race is that the upper layer (ieee802154) is\nunaware of this detaching event and the function adf7242_channel can\nbe called without any checks.\n\nTo fix this, we can add a flag write at the beginning of adf7242_remove\nand add flag check in adf7242_channel. Or we can just defer the\ndestructive operation like other commit 3e0588c291d6 (\"hamradio: defer\nax25 kfree after unregister_netdev\") which let the\nieee802154_unregister_hw() to handle the synchronization. This patch\ntakes the second option.\n\nruns\")"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The ADF7242 is an IEEE 802.15.4 transceiver; after destroy_workqueue and before unregister disables the IRQ, adf7242_isr() unconditionally calls mod_delayed_work() on the freed workqueue when the radio raises an RX interrupt, so an attacker in WPAN/Zigbee radio range can trigger the UAF by transmitting frames.\nAC:L - Once driver remove/unbind begins, the window through ieee802154_unregister_hw() (rtnl, interface teardown, then adf7242_stop/disable_irq) is large enough that continuous adjacent frame injection reliably hits the still-armed ISR path; the attacker fully controls the use side of the race.\nPR:N - Triggering the ISR use-after-free requires only the ability to send 802.15.4 radio frames that cause hardware IRQs\u2014no local Linux credentials or CAP_NET_ADMIN\u2014while the free side is a separate administrator unbind/unload.\nUI:R - SPI driver remove (sysfs unbind or rmmod) is required to destroy the workqueue before unregister; that teardown is a privileged operator/system maintenance action the adjacent attacker cannot perform alone.\nS:U - The UAF corrupts kernel heap state on the same host and yields standard local privilege-escalation impact without crossing a VM, IOMMU, or other security-authority boundary.\nC:H - This is a kernel workqueue use-after-free; freed-object reuse enables disclosure of kernel memory contents, so confidentiality impact is High per UAF guidance.\nI:H - mod_delayed_work() on a destroyed workqueue is exploitable heap memory corruption that can be turned into arbitrary write / control-flow hijacking via heap spraying.\nA:H - Use-after-free through the IRQ/workqueue path can cause kernel oops/panic even without full exploitation, so availability impact is High."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:56:55.772Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c"
        },
        {
          "url": "https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008"
        },
        {
          "url": "https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485"
        },
        {
          "url": "https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6"
        },
        {
          "url": "https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf"
        }
      ],
      "title": "ieee802154/adf7242: defer destroy_workqueue call",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49968",
    "datePublished": "2025-06-18T11:00:32.443Z",
    "dateReserved": "2025-06-18T10:57:27.384Z",
    "dateUpdated": "2026-08-05T08:56:55.772Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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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FKIE_CVE-2022-49968

CVE-2022-49968 (GCVE-0-2022-49968)

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