CVE-2024-35865 (GCVE-0-2024-35865)

Vulnerability from cvelistv5 – Published: 2024-05-19 08:34 – Updated: 2026-08-05 11:30
VLAI
Title
smb: client: fix potential UAF in smb2_is_valid_oplock_break()
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in smb2_is_valid_oplock_break() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-18 16:57 UTC
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7f48558e6489d032b1584b0cc9ac4bb11072c034 , < a710ef9e974f18232d2b9b19c90eda1a1167b2d4 (git)
Affected: 7f48558e6489d032b1584b0cc9ac4bb11072c034 , < 84488466b7a69570bdbf76dd9576847ab97d54e7 (git)
Affected: 7f48558e6489d032b1584b0cc9ac4bb11072c034 , < 21fed37d2bdcde33453faf61d3d4d96c355f04bd (git)
Affected: 7f48558e6489d032b1584b0cc9ac4bb11072c034 , < 3dba0e5276f131e36d6d8043191d856f49238628 (git)
Affected: 7f48558e6489d032b1584b0cc9ac4bb11072c034 , < 22863485a4626ec6ecf297f4cc0aef709bc862e4 (git)
Affected: a67172a013953664b1dad03c648200c70b90506c (git)
Affected: 3.12.48 , < 3.13 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 3.13
Unaffected: 0 , < 3.13 (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.85 , ≤ 6.1.* (semver)
Unaffected: 6.6.26 , ≤ 6.6.* (semver)
Unaffected: 6.8.5 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-35865",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-18T16:57:58.906769Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-01T15:44:35.957Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T03:21:48.469Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3dba0e5276f131e36d6d8043191d856f49238628"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2misc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a710ef9e974f18232d2b9b19c90eda1a1167b2d4",
              "status": "affected",
              "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
              "versionType": "git"
            },
            {
              "lessThan": "84488466b7a69570bdbf76dd9576847ab97d54e7",
              "status": "affected",
              "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
              "versionType": "git"
            },
            {
              "lessThan": "21fed37d2bdcde33453faf61d3d4d96c355f04bd",
              "status": "affected",
              "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
              "versionType": "git"
            },
            {
              "lessThan": "3dba0e5276f131e36d6d8043191d856f49238628",
              "status": "affected",
              "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
              "versionType": "git"
            },
            {
              "lessThan": "22863485a4626ec6ecf297f4cc0aef709bc862e4",
              "status": "affected",
              "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a67172a013953664b1dad03c648200c70b90506c",
              "versionType": "git"
            },
            {
              "lessThan": "3.13",
              "status": "affected",
              "version": "3.12.48",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2misc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.13"
            },
            {
              "lessThan": "3.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.85",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.26",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.85",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.26",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8.5",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.12.48",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential UAF in smb2_is_valid_oplock_break()\n\nSkip sessions that are being teared down (status == SES_EXITING) to\navoid UAF."
        }
      ],
      "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 function is invoked directly by the CIFS client\u0027s demultiplex thread on unsolicited SMB2 frames received from the remote server over TCP/445, with no signature verification and no SessionId validation on that path. A malicious/compromised SMB server or an attacker able to inject into the established TCP stream reaches it remotely.\nAC:L - The attacker controls both sides of the race: it can induce session teardown (DFS referral churn, failed session setup/tree connect, multiuser tlink expiry) and then hold the session in SES_EXITING for up to the ~180 s SMB response timeout by simply withholding the SMB2 LOGOFF reply, while flooding OPLOCK_BREAK frames into that window. The resulting window is enormous and entirely attacker-timed.\nPR:N - The remote peer needs no credentials or privileges on the victim client; the oplock-break handler runs before any MID match, signature check, or SessionId validation, so even an unauthenticated packet injector on the connection triggers it.\nUI:N - Against a client with an existing SMB mount, no victim action is required \u2014 the malicious server or MITM drives both the teardown and the oplock-break frames on its own. The mount is pre-existing system configuration, not an in-attack user action.\nS:U - The use-after-free corrupts kernel heap objects within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A use-after-free on session/tcon-reachable objects lets the attacker reclaim the freed slab object and steer the list traversal into attacker-influenced data, disclosing kernel memory and kernel pointers.\nI:H - The handler writes remote-controlled values (rsp-\u003eOplockLevel, oplock_epoch, PENDING_OPLOCK_BREAK bit) into the object it locates and then does cifsFileInfo_get() plus queue_work() on it, giving refcount-manipulation and workqueue-dispatch primitives on freed memory that are leverageable for control-flow hijack.\nA:H - Use-after-free in the demultiplex thread reliably produces kernel oops/panic, taking down the whole system even when full exploitation is not achieved."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:30:29.384Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a710ef9e974f18232d2b9b19c90eda1a1167b2d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/3dba0e5276f131e36d6d8043191d856f49238628"
        },
        {
          "url": "https://git.kernel.org/stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4"
        }
      ],
      "title": "smb: client: fix potential UAF in smb2_is_valid_oplock_break()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-35865",
    "datePublished": "2024-05-19T08:34:23.853Z",
    "dateReserved": "2024-05-17T13:50:33.107Z",
    "dateUpdated": "2026-08-05T11:30:29.384Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-35865",
      "date": "2026-09-20",
      "epss": "0.00631",
      "percentile": "0.48832"
    },
    "fkie_nvd": {
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential UAF in smb2_is_valid_oplock_break()\n\nSkip sessions that are being teared down (status == SES_EXITING) to\navoid UAF."
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: corrige UAF potencial en smb2_is_valid_oplock_break() Omita las sesiones que se est\u00e1n eliminando (estado == SES_EXITING) para evitar UAF."
        }
      ],
      "id": "CVE-2024-35865",
      "lastModified": "2024-11-21T09:21:04.827",
      "metrics": {
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 1.8,
            "impactScore": 3.6,
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      },
      "published": "2024-05-19T09:15:08.033",
      "references": [
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/3dba0e5276f131e36d6d8043191d856f49238628"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/3dba0e5276f131e36d6d8043191d856f49238628"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7"
        }
      ],
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "fs/smb/client/smb2misc.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "a710ef9e974f18232d2b9b19c90eda1a1167b2d4",
                    "status": "affected",
                    "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "84488466b7a69570bdbf76dd9576847ab97d54e7",
                    "status": "affected",
                    "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "21fed37d2bdcde33453faf61d3d4d96c355f04bd",
                    "status": "affected",
                    "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "3dba0e5276f131e36d6d8043191d856f49238628",
                    "status": "affected",
                    "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "22863485a4626ec6ecf297f4cc0aef709bc862e4",
                    "status": "affected",
                    "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "a67172a013953664b1dad03c648200c70b90506c",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "3.13",
                    "status": "affected",
                    "version": "3.12.48",
                    "versionType": "semver"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "fs/smb/client/smb2misc.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "3.13"
                  },
                  {
                    "lessThan": "3.13",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.209",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.85",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.26",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.8.*",
                    "status": "unaffected",
                    "version": "6.8.5",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.9",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B62CF0EC-6C39-4DAD-A6CC-C31C3277A460",
                    "versionEndExcluding": "6.1.85",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C520696A-A594-4FFC-A32D-12DA535CE911",
                    "versionEndExcluding": "6.6.26",
                    "versionStartIncluding": "6.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DBD6C99E-4250-4DFE-8447-FF2075939D10",
                    "versionEndExcluding": "6.8.5",
                    "versionStartIncluding": "6.7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "22BEDD49-2C6D-402D-9DBF-6646F6ECD10B",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*",
                    "matchCriteriaId": "DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential UAF in smb2_is_valid_oplock_break()\n\nSkip sessions that are being teared down (status == SES_EXITING) to\navoid UAF."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: corrige UAF potencial en smb2_is_valid_oplock_break() Omita las sesiones que se est\u00e1n eliminando (estado == SES_EXITING) para evitar UAF."
          }
        ],
        "id": "CVE-2024-35865",
        "lastModified": "2026-08-04T11:18:02.400",
        "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": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-35865",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-18T16:57:58.906769Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-05-19T09:15:08.033",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3dba0e5276f131e36d6d8043191d856f49238628"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a710ef9e974f18232d2b9b19c90eda1a1167b2d4"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3dba0e5276f131e36d6d8043191d856f49238628"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:47:31+00:00",
      "cve": "CVE-2024-35865",
      "id": "CVE-2024-35865",
      "initial_release_date": "2024-05-19T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "98",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: smb: client: fix potential UAF in smb2_is_valid_oplock_break()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-35865.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-19T02:33:56Z",
      "cve": "CVE-2024-35865",
      "id": "CVE-2024-35865",
      "initial_release_date": "2024-05-21T01:59:42Z",
      "product_status:known_affected": "481",
      "product_status:known_not_affected": "38",
      "product_status:recommended": "750",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-35865",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-35865.json",
      "version": "113"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-02T03:21:48.469Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/3dba0e5276f131e36d6d8043191d856f49238628"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "HIGH",
                  "baseScore": 5.5,
                  "baseSeverity": "MEDIUM",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-35865",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-06-18T16:57:58.906769Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "description": "CWE-noinfo Not enough information",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-06-18T16:58:03.807Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "fs/smb/client/smb2misc.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "a710ef9e974f18232d2b9b19c90eda1a1167b2d4",
                  "status": "affected",
                  "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                  "versionType": "git"
                },
                {
                  "lessThan": "84488466b7a69570bdbf76dd9576847ab97d54e7",
                  "status": "affected",
                  "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                  "versionType": "git"
                },
                {
                  "lessThan": "21fed37d2bdcde33453faf61d3d4d96c355f04bd",
                  "status": "affected",
                  "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                  "versionType": "git"
                },
                {
                  "lessThan": "3dba0e5276f131e36d6d8043191d856f49238628",
                  "status": "affected",
                  "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                  "versionType": "git"
                },
                {
                  "lessThan": "22863485a4626ec6ecf297f4cc0aef709bc862e4",
                  "status": "affected",
                  "version": "7f48558e6489d032b1584b0cc9ac4bb11072c034",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "a67172a013953664b1dad03c648200c70b90506c",
                  "versionType": "git"
                },
                {
                  "lessThan": "3.13",
                  "status": "affected",
                  "version": "3.12.48",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "fs/smb/client/smb2misc.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "3.13"
                },
                {
                  "lessThan": "3.13",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.209",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.85",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.26",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.8.*",
                  "status": "unaffected",
                  "version": "6.8.5",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.9",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.209",
                      "versionStartIncluding": "3.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.85",
                      "versionStartIncluding": "3.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.26",
                      "versionStartIncluding": "3.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.8.5",
                      "versionStartIncluding": "3.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.9",
                      "versionStartIncluding": "3.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "3.12.48",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential UAF in smb2_is_valid_oplock_break()\n\nSkip sessions that are being teared down (status == SES_EXITING) to\navoid UAF."
            }
          ],
          "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 function is invoked directly by the CIFS client\u0027s demultiplex thread on unsolicited SMB2 frames received from the remote server over TCP/445, with no signature verification and no SessionId validation on that path. A malicious/compromised SMB server or an attacker able to inject into the established TCP stream reaches it remotely.\nAC:L - The attacker controls both sides of the race: it can induce session teardown (DFS referral churn, failed session setup/tree connect, multiuser tlink expiry) and then hold the session in SES_EXITING for up to the ~180 s SMB response timeout by simply withholding the SMB2 LOGOFF reply, while flooding OPLOCK_BREAK frames into that window. The resulting window is enormous and entirely attacker-timed.\nPR:N - The remote peer needs no credentials or privileges on the victim client; the oplock-break handler runs before any MID match, signature check, or SessionId validation, so even an unauthenticated packet injector on the connection triggers it.\nUI:N - Against a client with an existing SMB mount, no victim action is required \u2014 the malicious server or MITM drives both the teardown and the oplock-break frames on its own. The mount is pre-existing system configuration, not an in-attack user action.\nS:U - The use-after-free corrupts kernel heap objects within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A use-after-free on session/tcon-reachable objects lets the attacker reclaim the freed slab object and steer the list traversal into attacker-influenced data, disclosing kernel memory and kernel pointers.\nI:H - The handler writes remote-controlled values (rsp-\u003eOplockLevel, oplock_epoch, PENDING_OPLOCK_BREAK bit) into the object it locates and then does cifsFileInfo_get() plus queue_work() on it, giving refcount-manipulation and workqueue-dispatch primitives on freed memory that are leverageable for control-flow hijack.\nA:H - Use-after-free in the demultiplex thread reliably produces kernel oops/panic, taking down the whole system even when full exploitation is not achieved."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:30:29.384Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/a710ef9e974f18232d2b9b19c90eda1a1167b2d4"
            },
            {
              "url": "https://git.kernel.org/stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7"
            },
            {
              "url": "https://git.kernel.org/stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd"
            },
            {
              "url": "https://git.kernel.org/stable/c/3dba0e5276f131e36d6d8043191d856f49238628"
            },
            {
              "url": "https://git.kernel.org/stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4"
            }
          ],
          "title": "smb: client: fix potential UAF in smb2_is_valid_oplock_break()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-35865",
        "datePublished": "2024-05-19T08:34:23.853Z",
        "dateReserved": "2024-05-17T13:50:33.107Z",
        "dateUpdated": "2026-08-05T11:30:29.384Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

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.


Loading…