CVE-2024-44992 (GCVE-0-2024-44992)

Vulnerability from cvelistv5 – Published: 2024-09-04 19:54 – Updated: 2025-05-04 09:30
VLAI?
Title
smb/client: avoid possible NULL dereference in cifs_free_subrequest()
Summary
In the Linux kernel, the following vulnerability has been resolved: smb/client: avoid possible NULL dereference in cifs_free_subrequest() Clang static checker (scan-build) warning: cifsglob.h:line 890, column 3 Access to field 'ops' results in a dereference of a null pointer. Commit 519be989717c ("cifs: Add a tracepoint to track credits involved in R/W requests") adds a check for 'rdata->server', and let clang throw this warning about NULL dereference. When 'rdata->credits.value != 0 && rdata->server == NULL' happens, add_credits_and_wake_if() will call rdata->server->ops->add_credits(). This will cause NULL dereference problem. Add a check for 'rdata->server' to avoid NULL dereference.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 69c3c023af25edb5433a2db824d3e7cc328f0183 , < fead60a6d5f84b472b928502a42c419253afe6c1 (git)
Affected: 69c3c023af25edb5433a2db824d3e7cc328f0183 , < 74c2ab6d653b4c2354df65a7f7f2df1925a40a51 (git)
Create a notification for this product.
    Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.10.7 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-44992",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-04T20:19:34.019685Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-04T20:19:53.480Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/file.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fead60a6d5f84b472b928502a42c419253afe6c1",
              "status": "affected",
              "version": "69c3c023af25edb5433a2db824d3e7cc328f0183",
              "versionType": "git"
            },
            {
              "lessThan": "74c2ab6d653b4c2354df65a7f7f2df1925a40a51",
              "status": "affected",
              "version": "69c3c023af25edb5433a2db824d3e7cc328f0183",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/file.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.7",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/client: avoid possible NULL dereference in cifs_free_subrequest()\n\nClang static checker (scan-build) warning:\n\tcifsglob.h:line 890, column 3\n\tAccess to field \u0027ops\u0027 results in a dereference of a null pointer.\n\nCommit 519be989717c (\"cifs: Add a tracepoint to track credits involved in\nR/W requests\") adds a check for \u0027rdata-\u003eserver\u0027, and let clang throw this\nwarning about NULL dereference.\n\nWhen \u0027rdata-\u003ecredits.value != 0 \u0026\u0026 rdata-\u003eserver == NULL\u0027 happens,\nadd_credits_and_wake_if() will call rdata-\u003eserver-\u003eops-\u003eadd_credits().\nThis will cause NULL dereference problem. Add a check for \u0027rdata-\u003eserver\u0027\nto avoid NULL dereference."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T09:30:35.937Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fead60a6d5f84b472b928502a42c419253afe6c1"
        },
        {
          "url": "https://git.kernel.org/stable/c/74c2ab6d653b4c2354df65a7f7f2df1925a40a51"
        }
      ],
      "title": "smb/client: avoid possible NULL dereference in cifs_free_subrequest()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-44992",
    "datePublished": "2024-09-04T19:54:38.878Z",
    "dateReserved": "2024-08-21T05:34:56.671Z",
    "dateUpdated": "2025-05-04T09:30:35.937Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-44992\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-04T20:15:08.207\",\"lastModified\":\"2024-09-06T16:29:28.963\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsmb/client: avoid possible NULL dereference in cifs_free_subrequest()\\n\\nClang static checker (scan-build) warning:\\n\\tcifsglob.h:line 890, column 3\\n\\tAccess to field \u0027ops\u0027 results in a dereference of a null pointer.\\n\\nCommit 519be989717c (\\\"cifs: Add a tracepoint to track credits involved in\\nR/W requests\\\") adds a check for \u0027rdata-\u003eserver\u0027, and let clang throw this\\nwarning about NULL dereference.\\n\\nWhen \u0027rdata-\u003ecredits.value != 0 \u0026\u0026 rdata-\u003eserver == NULL\u0027 happens,\\nadd_credits_and_wake_if() will call rdata-\u003eserver-\u003eops-\u003eadd_credits().\\nThis will cause NULL dereference problem. Add a check for \u0027rdata-\u003eserver\u0027\\nto avoid NULL dereference.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb/client: evitar posible desreferencia NULL en cifs_free_subrequest() Advertencia del verificador est\u00e1tico de Clang (scan-build): cifsglob.h:l\u00ednea 890, columna 3 El acceso al campo \u0027ops\u0027 da como resultado una desreferencia de un puntero nulo. El commit 519be989717c (\\\"cifs: Agregar un punto de seguimiento para rastrear cr\u00e9ditos involucrados en solicitudes R/W\\\") agrega una verificaci\u00f3n para \u0027rdata-\u0026gt;server\u0027 y permite que clang lance esta advertencia sobre la desreferencia NULL. Cuando sucede \u0027rdata-\u0026gt;credits.value != 0 \u0026amp;\u0026amp; rdata-\u0026gt;server == NULL\u0027, add_credits_and_wake_if() llamar\u00e1 a rdata-\u0026gt;server-\u0026gt;ops-\u0026gt;add_credits(). Esto causar\u00e1 un problema de desreferencia NULL. Agregue una verificaci\u00f3n para \u0027rdata-\u0026gt;server\u0027 para evitar la desreferencia NULL.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.10\",\"versionEndExcluding\":\"6.10.7\",\"matchCriteriaId\":\"E55C1263-DF43-41EF-8DA8-2BA68DF4FFFD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/74c2ab6d653b4c2354df65a7f7f2df1925a40a51\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fead60a6d5f84b472b928502a42c419253afe6c1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-44992\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-04T20:19:34.019685Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-04T20:19:37.936Z\"}}], \"cna\": {\"title\": \"smb/client: avoid possible NULL dereference in cifs_free_subrequest()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"69c3c023af25edb5433a2db824d3e7cc328f0183\", \"lessThan\": \"fead60a6d5f84b472b928502a42c419253afe6c1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"69c3c023af25edb5433a2db824d3e7cc328f0183\", \"lessThan\": \"74c2ab6d653b4c2354df65a7f7f2df1925a40a51\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/smb/client/file.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.10.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/smb/client/file.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/fead60a6d5f84b472b928502a42c419253afe6c1\"}, {\"url\": \"https://git.kernel.org/stable/c/74c2ab6d653b4c2354df65a7f7f2df1925a40a51\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsmb/client: avoid possible NULL dereference in cifs_free_subrequest()\\n\\nClang static checker (scan-build) warning:\\n\\tcifsglob.h:line 890, column 3\\n\\tAccess to field \u0027ops\u0027 results in a dereference of a null pointer.\\n\\nCommit 519be989717c (\\\"cifs: Add a tracepoint to track credits involved in\\nR/W requests\\\") adds a check for \u0027rdata-\u003eserver\u0027, and let clang throw this\\nwarning about NULL dereference.\\n\\nWhen \u0027rdata-\u003ecredits.value != 0 \u0026\u0026 rdata-\u003eserver == NULL\u0027 happens,\\nadd_credits_and_wake_if() will call rdata-\u003eserver-\u003eops-\u003eadd_credits().\\nThis will cause NULL dereference problem. Add a check for \u0027rdata-\u003eserver\u0027\\nto avoid NULL dereference.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:19:48.405Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-44992\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:19:48.405Z\", \"dateReserved\": \"2024-08-21T05:34:56.671Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-04T19:54:38.878Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.