github - ghsa-53cv-6gxv-7335

ghsa-53cv-6gxv-7335

Vulnerability from github

Published

2024-09-04 21:30

Modified

2024-09-06 18:31

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-44992"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-04T20:15:08Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-53cv-6gxv-7335",
  "modified": "2024-09-06T18:31:29Z",
  "published": "2024-09-04T21:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-44992"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/74c2ab6d653b4c2354df65a7f7f2df1925a40a51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fead60a6d5f84b472b928502a42c419253afe6c1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2024-44992

Vulnerability from cvelistv5

Published

2024-09-04 19:54

Modified

2024-12-19 09:19

Severity ?

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.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/fead60a6d5f84b472b928502a42c419253afe6c1
	https://git.kernel.org/stable/c/74c2ab6d653b4c2354df65a7f7f2df1925a40a51

Impacted products

Vendor

Product

Version

▼

Linux

Version: 69c3c023af25edb5433a2db824d3e7cc328f0183
Version: 69c3c023af25edb5433a2db824d3e7cc328f0183

Linux

Version: 6.10

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JSON

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        "metrics": [
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                "id": "CVE-2024-44992",
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                  },
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-04T20:19:34.019685Z",
                "version": "2.0.3"
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              "type": "ssvc"
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        ],
        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/file.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "versions": [
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              "versionType": "original_commit_for_fix"
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        }
      ],
      "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."
        }
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      "providerMetadata": {
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        }
      ],
      "title": "smb/client: avoid possible NULL dereference in cifs_free_subrequest()",
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  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
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    "datePublished": "2024-09-04T19:54:38.878Z",
    "dateReserved": "2024-08-21T05:34:56.671Z",
    "dateUpdated": "2024-12-19T09:19:48.405Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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