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CVE-2026-23372 (GCVE-0-2026-23372)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-08-05 12:21
VLAI
Title
nfc: rawsock: cancel tx_work before socket teardown
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: rawsock: cancel tx_work before socket teardown In rawsock_release(), cancel any pending tx_work and purge the write queue before orphaning the socket. rawsock_tx_work runs on the system workqueue and calls nfc_data_exchange which dereferences the NCI device. Without synchronization, tx_work can race with socket and device teardown when a process is killed (e.g. by SIGKILL), leading to use-after-free or leaked references. Set SEND_SHUTDOWN first so that if tx_work is already running it will see the flag and skip transmitting, then use cancel_work_sync to wait for any in-progress execution to finish, and finally purge any remaining queued skbs.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < 9b2d23cd09e1cb56bdf0e4d5614703094159f16c (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < cdeed45ce8c92defd057f7d67ee9a69374d8fa16 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < 3ae592ed91bb4b6b51df256b51045c13d2656049 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < 722a28b635ec281bb08a23885223526d8e7d6526 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < 78141b8832e16d80d09cbefb4258612db0777a24 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < edc988613def90c5b558e025b1b423f48007be06 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < da4515fc8263c5933ed605e396af91079806dc45 (git)
Affected: 23b7869c0fd08d73c9f83a2db88a13312d6198bb , < d793458c45df2aed498d7f74145eab7ee22d25aa (git)
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Linux Linux Affected: 3.1
Unaffected: 0 , < 3.1 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: rawsock: cancel tx_work before socket teardown\n\nIn rawsock_release(), cancel any pending tx_work and purge the write\nqueue before orphaning the socket.  rawsock_tx_work runs on the system\nworkqueue and calls nfc_data_exchange which dereferences the NCI\ndevice.  Without synchronization, tx_work can race with socket and\ndevice teardown when a process is killed (e.g. by SIGKILL), leading\nto use-after-free or leaked references.\n\nSet SEND_SHUTDOWN first so that if tx_work is already running it will\nsee the flag and skip transmitting, then use cancel_work_sync to wait\nfor any in-progress execution to finish, and finally purge any\nremaining queued skbs."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnfc: rawsock: cancelar tx_work antes del desmontaje del socket\n\nEn rawsock_release(), cancelar cualquier tx_work pendiente y purgar la cola de escritura antes de dejar hu\u00e9rfano el socket. rawsock_tx_work se ejecuta en la cola de trabajo del sistema y llama a nfc_data_exchange, que desreferencia el dispositivo NCI. Sin sincronizaci\u00f3n, tx_work puede competir con el desmontaje del socket y del dispositivo cuando un proceso es terminado (p. ej., por SIGKILL), lo que lleva a uso despu\u00e9s de liberaci\u00f3n o referencias filtradas.\n\nEstablecer SEND_SHUTDOWN primero para que si tx_work ya se est\u00e1 ejecutando, vea la bandera y omita la transmisi\u00f3n, luego usar cancel_work_sync para esperar a que finalice cualquier ejecuci\u00f3n en curso, y finalmente purgar cualquier skbs en cola restante."
          }
        ],
        "id": "CVE-2026-23372",
        "lastModified": "2026-06-17T10:21:27.090",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-03-25T11:16:36.780",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3ae592ed91bb4b6b51df256b51045c13d2656049"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/722a28b635ec281bb08a23885223526d8e7d6526"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/78141b8832e16d80d09cbefb4258612db0777a24"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9b2d23cd09e1cb56bdf0e4d5614703094159f16c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/cdeed45ce8c92defd057f7d67ee9a69374d8fa16"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d793458c45df2aed498d7f74145eab7ee22d25aa"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/da4515fc8263c5933ed605e396af91079806dc45"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/edc988613def90c5b558e025b1b423f48007be06"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T07:20:32+00:00",
      "cve": "CVE-2026-23372",
      "id": "CVE-2026-23372",
      "initial_release_date": "2026-03-25T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nfc: rawsock: cancel tx_work before socket teardown",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23372.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-15T05:29:26Z",
      "cve": "CVE-2026-23372",
      "id": "CVE-2026-23372",
      "initial_release_date": "2026-03-25T16:55:19Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "211",
      "product_status:known_not_affected": "28",
      "product_status:recommended": "268",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23372",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23372.json",
      "version": "12"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.


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.