CVE-2024-57791 (GCVE-0-2024-57791)

Vulnerability from cvelistv5 – Published: 2025-01-11 12:35 – Updated: 2026-10-15 21:51
VLAI
Title
net/smc: check return value of sock_recvmsg when draining clc data
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: check return value of sock_recvmsg when draining clc data When receiving clc msg, the field length in smc_clc_msg_hdr indicates the length of msg should be received from network and the value should not be fully trusted as it is from the network. Once the value of length exceeds the value of buflen in function smc_clc_wait_msg it may run into deadloop when trying to drain the remaining data exceeding buflen. This patch checks the return value of sock_recvmsg when draining data in case of deadloop in draining.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 21:41 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1 , < 82c7ad9ca09975aae737abffd66d1ad98874c13d (git)
Affected: fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1 , < 6b80924af6216277892d5f091f5bfc7d1265fa28 (git)
Affected: fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1 , < d7d1f986ebb284b1db8dafca7d1bdb6dd2445cf6 (git)
Affected: fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1 , < 7a6927814b4256d603e202ae7c5e38db3b338896 (git)
Affected: fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1 , < df3dfe1a93c6298d8c09a18e4fba19ef5b17763b (git)
Affected: fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1 , < c5b8ee5022a19464783058dc6042e8eefa34e8cd (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.233 , ≤ 5.10.* (semver)
Unaffected: 5.15.176 , ≤ 5.15.* (semver)
Unaffected: 6.1.122 , ≤ 6.1.* (semver)
Unaffected: 6.6.68 , ≤ 6.6.* (semver)
Unaffected: 6.12.7 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: check return value of sock_recvmsg when draining clc data\n\nWhen receiving clc msg, the field length in smc_clc_msg_hdr indicates the\nlength of msg should be received from network and the value should not be\nfully trusted as it is from the network. Once the value of length exceeds\nthe value of buflen in function smc_clc_wait_msg it may run into deadloop\nwhen trying to drain the remaining data exceeding buflen.\n\nThis patch checks the return value of sock_recvmsg when draining data in\ncase of deadloop in draining."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/smc: comprobar el valor de retorno de sock_recvmsg al drenar datos de clc Al recibir un mensaje de clc, la longitud del campo en smc_clc_msg_hdr indica que la longitud del mensaje debe recibirse de la red y que el valor no debe ser completamente confiable ya que es de la red. Una vez que el valor de la longitud excede el valor de buflen en la funci\u00f3n smc_clc_wait_msg, puede encontrarse con un bucle muerto al intentar drenar los datos restantes que exceden buflen. Este parche verifica el valor de retorno de sock_recvmsg al drenar datos en caso de un bucle muerto en el drenaje."
          }
        ],
        "id": "CVE-2024-57791",
        "lastModified": "2026-10-15T22:18:02.853",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
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                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T21:41:23.498417Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-01-11T13:15:29.253",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6b80924af6216277892d5f091f5bfc7d1265fa28"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7a6927814b4256d603e202ae7c5e38db3b338896"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/82c7ad9ca09975aae737abffd66d1ad98874c13d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/c5b8ee5022a19464783058dc6042e8eefa34e8cd"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d7d1f986ebb284b1db8dafca7d1bdb6dd2445cf6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/df3dfe1a93c6298d8c09a18e4fba19ef5b17763b"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-30T00:57:38+00:00",
      "cve": "CVE-2024-57791",
      "id": "CVE-2024-57791",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/smc: check return value of sock_recvmsg when draining clc data",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-57791.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-11-01T17:37:39Z",
      "cve": "CVE-2024-57791",
      "id": "CVE-2024-57791",
      "initial_release_date": "2025-01-12T00:14:18Z",
      "product_status:known_affected": "427",
      "product_status:known_not_affected": "128",
      "product_status:recommended": "735",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-57791",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2025/cve-2024-57791.json",
      "version": "82"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T20:54:28.243Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
              },
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-57791",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-15T21:41:23.498417Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-15T21:41:26.122Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "net/smc/smc_clc.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "82c7ad9ca09975aae737abffd66d1ad98874c13d",
                  "status": "affected",
                  "version": "fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1",
                  "versionType": "git"
                },
                {
                  "lessThan": "6b80924af6216277892d5f091f5bfc7d1265fa28",
                  "status": "affected",
                  "version": "fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1",
                  "versionType": "git"
                },
                {
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                  "status": "affected",
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                  "versionType": "git"
                },
                {
                  "lessThan": "7a6927814b4256d603e202ae7c5e38db3b338896",
                  "status": "affected",
                  "version": "fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1",
                  "versionType": "git"
                },
                {
                  "lessThan": "df3dfe1a93c6298d8c09a18e4fba19ef5b17763b",
                  "status": "affected",
                  "version": "fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1",
                  "versionType": "git"
                },
                {
                  "lessThan": "c5b8ee5022a19464783058dc6042e8eefa34e8cd",
                  "status": "affected",
                  "version": "fb4f79264c0fc6fd5a68ffe3e31bfff97311e1f1",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/smc/smc_clc.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.8"
                },
                {
                  "lessThan": "5.8",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.233",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.176",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.122",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.68",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.7",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.13",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.233",
                      "versionStartIncluding": "5.8",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.176",
                      "versionStartIncluding": "5.8",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.122",
                      "versionStartIncluding": "5.8",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.68",
                      "versionStartIncluding": "5.8",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.7",
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                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13",
                      "versionStartIncluding": "5.8",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: check return value of sock_recvmsg when draining clc data\n\nWhen receiving clc msg, the field length in smc_clc_msg_hdr indicates the\nlength of msg should be received from network and the value should not be\nfully trusted as it is from the network. Once the value of length exceeds\nthe value of buflen in function smc_clc_wait_msg it may run into deadloop\nwhen trying to drain the remaining data exceeding buflen.\n\nThis patch checks the return value of sock_recvmsg when draining data in\ncase of deadloop in draining."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:N - SMC CLC handshake messages arrive over routable TCP/IP; the malicious `hdr.length` and the subsequent FIN/RST come entirely from a remote peer connecting to an SMC listener (or from a malicious server a client connects to). No adjacency requirement.\nAC:L - The attacker deterministically triggers the loop by sending a V2 CLC ACCEPT/CONFIRM/DECLINE header whose length field exceeds the receive buffer and then closing the socket; there is no race, no memory-layout dependency, and every input is attacker-controlled.\nPR:N - The CLC exchange is the very first thing processed after the TCP handshake and SMC performs no authentication whatsoever, so an unauthenticated remote peer reaches `smc_clc_wait_msg()` directly.\nUI:N - On the server side `smc_listen_work()` processes the crafted message automatically on connection acceptance; no local user action is needed.\nS:U - The hang is confined to the kernel\u0027s own security authority \u2014 a stuck workqueue worker/task and an SMC mutex; no boundary such as a VM or IOMMU domain is crossed.\nC:N - The drain loop reads into a bounded 100-byte stack buffer whose kvec `iov_len` caps every copy, and the discarded data is never returned to anyone; no memory contents are disclosed.\nI:N - No out-of-bounds write or state corruption occurs \u2014 even when `datlen` wraps negative, the kvec length bound prevents any overflow, so no data is modified.\nA:H - The unkillable infinite loop burns 100% of a CPU per connection while holding `lock_sock()` and, for SMC-R, the global `smc_server_lgr_pending` mutex, permanently wedging all SMC handshakes on the host; repeating it across connections exhausts every CPU and handshake worker."
                }
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            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:46:31.003Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/82c7ad9ca09975aae737abffd66d1ad98874c13d"
            },
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            },
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            },
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            },
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              "url": "https://git.kernel.org/stable/c/df3dfe1a93c6298d8c09a18e4fba19ef5b17763b"
            },
            {
              "url": "https://git.kernel.org/stable/c/c5b8ee5022a19464783058dc6042e8eefa34e8cd"
            }
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      "cveMetadata": {
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        "assignerShortName": "Linux",
        "cveId": "CVE-2024-57791",
        "datePublished": "2025-01-11T12:35:48.905Z",
        "dateReserved": "2025-01-09T09:50:31.752Z",
        "dateUpdated": "2026-10-15T21:51:48.859Z",
        "state": "PUBLISHED"
      },
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      "dataVersion": "5.2"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • 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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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