GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2024-26583 (GCVE-0-2024-26583)

Vulnerability from cvelistv5 – Published: 2024-02-21 14:59 – Updated: 2026-08-05 11:26
VLAI
Title
tls: fix race between async notify and socket close
Summary
In the Linux kernel, the following vulnerability has been resolved: tls: fix race between async notify and socket close The submitting thread (one which called recvmsg/sendmsg) may exit as soon as the async crypto handler calls complete() so any code past that point risks touching already freed data. Try to avoid the locking and extra flags altogether. Have the main thread hold an extra reference, this way we can depend solely on the atomic ref counter for synchronization. Don't futz with reiniting the completion, either, we are now tightly controlling when completion fires.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-22 16:41 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0cada33241d9de205522e3858b18e506ca5cce2c , < f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7 (git)
Affected: 0cada33241d9de205522e3858b18e506ca5cce2c , < 7a3ca06d04d589deec81f56229a9a9d62352ce01 (git)
Affected: 0cada33241d9de205522e3858b18e506ca5cce2c , < 86dc27ee36f558fe223dbdfbfcb6856247356f4a (git)
Affected: 0cada33241d9de205522e3858b18e506ca5cce2c , < 6209319b2efdd8524691187ee99c40637558fa33 (git)
Affected: 0cada33241d9de205522e3858b18e506ca5cce2c , < aec7961916f3f9e88766e2688992da6980f11b8d (git)
Affected: cf4cc95a15f599560c7abd89095a7973a4b9cec3 (git)
Affected: 9b81d43da15e56ed89f083f326561acdcaf549ce (git)
Affected: 5.4.44 , < 5.5 (semver)
Affected: 5.6.16 , < 5.7 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.15.160 , ≤ 5.15.* (semver)
Unaffected: 6.1.79 , ≤ 6.1.* (semver)
Unaffected: 6.6.18 , ≤ 6.6.* (semver)
Unaffected: 6.7.6 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-26583",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-02-22T16:41:40.480459Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-05T17:21:01.043Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T18:29:46.349Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/tls.h",
            "net/tls/tls_sw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7",
              "status": "affected",
              "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
              "versionType": "git"
            },
            {
              "lessThan": "7a3ca06d04d589deec81f56229a9a9d62352ce01",
              "status": "affected",
              "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
              "versionType": "git"
            },
            {
              "lessThan": "86dc27ee36f558fe223dbdfbfcb6856247356f4a",
              "status": "affected",
              "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
              "versionType": "git"
            },
            {
              "lessThan": "6209319b2efdd8524691187ee99c40637558fa33",
              "status": "affected",
              "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
              "versionType": "git"
            },
            {
              "lessThan": "aec7961916f3f9e88766e2688992da6980f11b8d",
              "status": "affected",
              "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "cf4cc95a15f599560c7abd89095a7973a4b9cec3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9b81d43da15e56ed89f083f326561acdcaf549ce",
              "versionType": "git"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.44",
              "versionType": "semver"
            },
            {
              "lessThan": "5.7",
              "status": "affected",
              "version": "5.6.16",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/tls.h",
            "net/tls/tls_sw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.79",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.8",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.160",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.79",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.18",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.7.6",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.4.44",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix race between async notify and socket close\n\nThe submitting thread (one which called recvmsg/sendmsg)\nmay exit as soon as the async crypto handler calls complete()\nso any code past that point risks touching already freed data.\n\nTry to avoid the locking and extra flags altogether.\nHave the main thread hold an extra reference, this way\nwe can depend solely on the atomic ref counter for\nsynchronization.\n\nDon\u0027t futz with reiniting the completion, either, we are now\ntightly controlling when completion fires."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The vulnerable path is kTLS record processing (`net/tls/tls_sw.c`); the RX-side race is driven by TLS records sent by the remote peer of a kTLS-offloaded socket (kTLS HTTPS servers, NVMe-TCP/TLS), which controls how many async decryptions are in flight and when the final completion fires. Per kernel scoring guidance, kTLS bugs triggered by remote peer data are Network.\nAC:L - The attacker controls both sides of the race \u2014 it supplies the data that triggers the async crypto completions and drives the socket teardown (locally via its own close(), remotely by ending the request/connection so the server closes) \u2014 and can retry across thousands of concurrent connections until the window is won.\nPR:N - There is no capability or authorization check anywhere in net/tls; a remote peer of a public kTLS server needs no credentials, and a local attacker needs only an ordinary unprivileged socket to set the TLS ULP and install keys.\nUI:N - No victim action is required; the socket close that closes the race is ordinary application behavior the attacker induces, not a user-performed operation.\nS:U - The corruption is confined to kernel slab memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed `tls_sw_context_rx`/`tls_sw_context_tx` comes from a generic kmalloc cache and can be reclaimed by attacker-controlled objects, so the use-after-free gives control over freed-object contents and can be leveraged for kernel memory disclosure.\nI:H - The callback performs writes into the freed object (`spin_unlock_bh`, `test_and_set_bit` on `tx_bitmask`) and queues a `delayed_work` residing in freed memory whose function pointer is later dereferenced, yielding heap corruption at known offsets and a control-flow hijack primitive.\nA:H - The use-after-free reliably produces slab corruption, oopses and panics, and the lost-wakeup half of the race can leave the submitting thread blocked forever in uninterruptible sleep holding the socket."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:26:02.205Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7"
        },
        {
          "url": "https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01"
        },
        {
          "url": "https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a"
        },
        {
          "url": "https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33"
        },
        {
          "url": "https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d"
        }
      ],
      "title": "tls: fix race between async notify and socket close",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26583",
    "datePublished": "2024-02-21T14:59:11.845Z",
    "dateReserved": "2024-02-19T14:20:24.125Z",
    "dateUpdated": "2026-08-05T11:26:02.205Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-26583",
      "date": "2026-09-19",
      "epss": "0.00546",
      "percentile": "0.44652"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "37AE2B04-CF69-412C-89AE-605725C54364",
                  "versionEndExcluding": "6.1.79",
                  "versionStartIncluding": "5.7.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "A5CC150E-F35C-4CF7-ADF5-422D32C511C2",
                  "versionEndExcluding": "6.6.18",
                  "versionStartIncluding": "6.2.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "0C8D1FAD-4D5D-4A25-B058-2AD15082710E",
                  "versionEndExcluding": "6.7.6",
                  "versionStartIncluding": "6.7.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix race between async notify and socket close\n\nThe submitting thread (one which called recvmsg/sendmsg)\nmay exit as soon as the async crypto handler calls complete()\nso any code past that point risks touching already freed data.\n\nTry to avoid the locking and extra flags altogether.\nHave the main thread hold an extra reference, this way\nwe can depend solely on the atomic ref counter for\nsynchronization.\n\nDon\u0027t futz with reiniting the completion, either, we are now\ntightly controlling when completion fires."
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tls: corrige la ejecuci\u00f3n entre la notificaci\u00f3n as\u00edncrona y el cierre del socket. El hilo de env\u00edo (uno que llam\u00f3 recvmsg/sendmsg) puede salir tan pronto como el controlador criptogr\u00e1fico as\u00edncrono llame a complete(), por lo que cualquier c\u00f3digo pasado ese punto corre el riesgo de tocar datos ya liberados. Intente evitar por completo el bloqueo y las banderas adicionales. Haga que el hilo principal contenga una referencia adicional, de esta manera podemos depender \u00fanicamente del contador de referencia at\u00f3mica para la sincronizaci\u00f3n. Tampoco te preocupes por reiniciar la finalizaci\u00f3n, ahora estamos controlando estrictamente cu\u00e1ndo se activa la finalizaci\u00f3n."
        }
      ],
      "id": "CVE-2024-26583",
      "lastModified": "2024-11-21T09:02:35.347",
      "metrics": {
        "cvssMetricV31": [
          {
            "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": "2024-02-21T15:15:09.373",
      "references": [
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7"
        }
      ],
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-362"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-20T23:34:20.000Z",
      "cve": "CVE-2024-26583",
      "id": "msrc_CVE-2024-26583",
      "initial_release_date": "2024-02-02T08:00:00.000Z",
      "product_status:fixed": "7",
      "product_status:known_affected": "7",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "tls: fix race between async notify and socket close",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-26583.json",
      "version": "3"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "include/net/tls.h",
                  "net/tls/tls_sw.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7",
                    "status": "affected",
                    "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7a3ca06d04d589deec81f56229a9a9d62352ce01",
                    "status": "affected",
                    "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "86dc27ee36f558fe223dbdfbfcb6856247356f4a",
                    "status": "affected",
                    "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6209319b2efdd8524691187ee99c40637558fa33",
                    "status": "affected",
                    "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "aec7961916f3f9e88766e2688992da6980f11b8d",
                    "status": "affected",
                    "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "cf4cc95a15f599560c7abd89095a7973a4b9cec3",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "9b81d43da15e56ed89f083f326561acdcaf549ce",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "5.5",
                    "status": "affected",
                    "version": "5.4.44",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.7",
                    "status": "affected",
                    "version": "5.6.16",
                    "versionType": "semver"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "include/net/tls.h",
                  "net/tls/tls_sw.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.7"
                  },
                  {
                    "lessThan": "5.7",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.160",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.79",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.18",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.7.*",
                    "status": "unaffected",
                    "version": "6.7.6",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.8",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "37AE2B04-CF69-412C-89AE-605725C54364",
                    "versionEndExcluding": "6.1.79",
                    "versionStartIncluding": "5.7.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A5CC150E-F35C-4CF7-ADF5-422D32C511C2",
                    "versionEndExcluding": "6.6.18",
                    "versionStartIncluding": "6.2.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0C8D1FAD-4D5D-4A25-B058-2AD15082710E",
                    "versionEndExcluding": "6.7.6",
                    "versionStartIncluding": "6.7.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix race between async notify and socket close\n\nThe submitting thread (one which called recvmsg/sendmsg)\nmay exit as soon as the async crypto handler calls complete()\nso any code past that point risks touching already freed data.\n\nTry to avoid the locking and extra flags altogether.\nHave the main thread hold an extra reference, this way\nwe can depend solely on the atomic ref counter for\nsynchronization.\n\nDon\u0027t futz with reiniting the completion, either, we are now\ntightly controlling when completion fires."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tls: corrige la ejecuci\u00f3n entre la notificaci\u00f3n as\u00edncrona y el cierre del socket. El hilo de env\u00edo (uno que llam\u00f3 recvmsg/sendmsg) puede salir tan pronto como el controlador criptogr\u00e1fico as\u00edncrono llame a complete(), por lo que cualquier c\u00f3digo pasado ese punto corre el riesgo de tocar datos ya liberados. Intente evitar por completo el bloqueo y las banderas adicionales. Haga que el hilo principal contenga una referencia adicional, de esta manera podemos depender \u00fanicamente del contador de referencia at\u00f3mica para la sincronizaci\u00f3n. Tampoco te preocupes por reiniciar la finalizaci\u00f3n, ahora estamos controlando estrictamente cu\u00e1ndo se activa la finalizaci\u00f3n."
          }
        ],
        "id": "CVE-2024-26583",
        "lastModified": "2026-08-04T11:16:44.493",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "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"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-26583",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-02-22T16:41:40.480459Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-02-21T15:15:09.373",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM/"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-362"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:13:38+00:00",
      "cve": "CVE-2024-26583",
      "id": "CVE-2024-26583",
      "initial_release_date": "2024-02-21T00:00:00+00:00",
      "product_status:fixed": "929",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "59",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tls: race between async notify and socket close",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26583.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-02T01:36:00Z",
      "cve": "CVE-2024-26583",
      "id": "CVE-2024-26583",
      "initial_release_date": "2024-02-23T03:20:43Z",
      "product_status:known_affected": "292",
      "product_status:known_not_affected": "236",
      "product_status:recommended": "910",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26583",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26583.json",
      "version": "84"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-04T18:29:46.349Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d"
              },
              {
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM/"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-26583",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-02-22T16:41:40.480459Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-07-05T15:20:37.581Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "include/net/tls.h",
                "net/tls/tls_sw.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7",
                  "status": "affected",
                  "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                  "versionType": "git"
                },
                {
                  "lessThan": "7a3ca06d04d589deec81f56229a9a9d62352ce01",
                  "status": "affected",
                  "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                  "versionType": "git"
                },
                {
                  "lessThan": "86dc27ee36f558fe223dbdfbfcb6856247356f4a",
                  "status": "affected",
                  "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                  "versionType": "git"
                },
                {
                  "lessThan": "6209319b2efdd8524691187ee99c40637558fa33",
                  "status": "affected",
                  "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                  "versionType": "git"
                },
                {
                  "lessThan": "aec7961916f3f9e88766e2688992da6980f11b8d",
                  "status": "affected",
                  "version": "0cada33241d9de205522e3858b18e506ca5cce2c",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "cf4cc95a15f599560c7abd89095a7973a4b9cec3",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "9b81d43da15e56ed89f083f326561acdcaf549ce",
                  "versionType": "git"
                },
                {
                  "lessThan": "5.5",
                  "status": "affected",
                  "version": "5.4.44",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.7",
                  "status": "affected",
                  "version": "5.6.16",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "include/net/tls.h",
                "net/tls/tls_sw.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.7"
                },
                {
                  "lessThan": "5.7",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.160",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.79",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.18",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.7.*",
                  "status": "unaffected",
                  "version": "6.7.6",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.8",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.160",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.79",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.18",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.7.6",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.8",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.4.44",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.6.16",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix race between async notify and socket close\n\nThe submitting thread (one which called recvmsg/sendmsg)\nmay exit as soon as the async crypto handler calls complete()\nso any code past that point risks touching already freed data.\n\nTry to avoid the locking and extra flags altogether.\nHave the main thread hold an extra reference, this way\nwe can depend solely on the atomic ref counter for\nsynchronization.\n\nDon\u0027t futz with reiniting the completion, either, we are now\ntightly controlling when completion fires."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:N - The vulnerable path is kTLS record processing (`net/tls/tls_sw.c`); the RX-side race is driven by TLS records sent by the remote peer of a kTLS-offloaded socket (kTLS HTTPS servers, NVMe-TCP/TLS), which controls how many async decryptions are in flight and when the final completion fires. Per kernel scoring guidance, kTLS bugs triggered by remote peer data are Network.\nAC:L - The attacker controls both sides of the race \u2014 it supplies the data that triggers the async crypto completions and drives the socket teardown (locally via its own close(), remotely by ending the request/connection so the server closes) \u2014 and can retry across thousands of concurrent connections until the window is won.\nPR:N - There is no capability or authorization check anywhere in net/tls; a remote peer of a public kTLS server needs no credentials, and a local attacker needs only an ordinary unprivileged socket to set the TLS ULP and install keys.\nUI:N - No victim action is required; the socket close that closes the race is ordinary application behavior the attacker induces, not a user-performed operation.\nS:U - The corruption is confined to kernel slab memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed `tls_sw_context_rx`/`tls_sw_context_tx` comes from a generic kmalloc cache and can be reclaimed by attacker-controlled objects, so the use-after-free gives control over freed-object contents and can be leveraged for kernel memory disclosure.\nI:H - The callback performs writes into the freed object (`spin_unlock_bh`, `test_and_set_bit` on `tx_bitmask`) and queues a `delayed_work` residing in freed memory whose function pointer is later dereferenced, yielding heap corruption at known offsets and a control-flow hijack primitive.\nA:H - The use-after-free reliably produces slab corruption, oopses and panics, and the lost-wakeup half of the race can leave the submitting thread blocked forever in uninterruptible sleep holding the socket."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:26:02.205Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7"
            },
            {
              "url": "https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01"
            },
            {
              "url": "https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a"
            },
            {
              "url": "https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33"
            },
            {
              "url": "https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d"
            }
          ],
          "title": "tls: fix race between async notify and socket close",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-26583",
        "datePublished": "2024-02-21T14:59:11.845Z",
        "dateReserved": "2024-02-19T14:20:24.125Z",
        "dateUpdated": "2026-08-05T11:26:02.205Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




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.


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.