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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74c2ab6d653b4c2354df65a7f7f2df1925a40a51Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fead60a6d5f84b472b928502a42c419253afe6c1Patch
Impacted products
Vendor Product Version
Linux Linux Version: 6.10
Show details on NVD website

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                "id": "CVE-2024-44992",
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          "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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      "title": "smb/client: avoid possible NULL dereference in cifs_free_subrequest()",
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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"
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