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

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2026-08-05 08:56
VLAI
Title
ieee802154/adf7242: defer destroy_workqueue call
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")
Severity
8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
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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)
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            "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\")"
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            "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."
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        "id": "CVE-2022-49968",
        "lastModified": "2026-08-04T10:18:01.260",
        "metrics": {
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                "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"
            },
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 4.7,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-06-18T11:15:24.123",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-362"
              },
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:15:25+00:00",
      "cve": "CVE-2022-49968",
      "id": "CVE-2022-49968",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ieee802154/adf7242: defer destroy_workqueue call",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49968.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:24:23Z",
      "cve": "CVE-2022-49968",
      "id": "CVE-2022-49968",
      "initial_release_date": "2025-06-19T03:45:19Z",
      "product_status:known_affected": "370",
      "product_status:known_not_affected": "360",
      "product_status:recommended": "273",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49968",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49968.json",
      "version": "43"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.