CVE-2025-40103 (GCVE-0-2025-40103)
Vulnerability from cvelistv5
Published
2025-10-30 09:48
Modified
2025-10-30 09:48
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix refcount leak for cifs_sb_tlink Fix three refcount inconsistency issues related to `cifs_sb_tlink`. Comments for `cifs_sb_tlink` state that `cifs_put_tlink()` needs to be called after successful calls to `cifs_sb_tlink()`. Three calls fail to update refcount accordingly, leading to possible resource leaks.
References
Impacted products
Vendor Product Version
Linux Linux Version: 8ceb984379462f94bdebef3288d569c6e1f912ea
Version: 8ceb984379462f94bdebef3288d569c6e1f912ea
Version: 8ceb984379462f94bdebef3288d569c6e1f912ea
Version: 8ceb984379462f94bdebef3288d569c6e1f912ea
Version: 8ceb984379462f94bdebef3288d569c6e1f912ea
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/inode.c",
            "fs/smb/client/smb2ops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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            "fs/smb/client/smb2ops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "3.7"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Fix refcount leak for cifs_sb_tlink\n\nFix three refcount inconsistency issues related to `cifs_sb_tlink`.\n\nComments for `cifs_sb_tlink` state that `cifs_put_tlink()` needs to be\ncalled after successful calls to `cifs_sb_tlink()`. Three calls fail to\nupdate refcount accordingly, leading to possible resource leaks."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-30T09:48:08.421Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/790282abe9d805f08618c1c24ea2529e7259b692"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7dd034c14928306db1b46be277ae439b84dacf9"
        },
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        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/c2b77f42205ef485a647f62082c442c1cd69d3fc"
        }
      ],
      "title": "smb: client: Fix refcount leak for cifs_sb_tlink",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40103",
    "datePublished": "2025-10-30T09:48:08.421Z",
    "dateReserved": "2025-04-16T07:20:57.164Z",
    "dateUpdated": "2025-10-30T09:48:08.421Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40103\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-30T10:15:34.693\",\"lastModified\":\"2025-10-30T15:03:13.440\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsmb: client: Fix refcount leak for cifs_sb_tlink\\n\\nFix three refcount inconsistency issues related to `cifs_sb_tlink`.\\n\\nComments for `cifs_sb_tlink` state that `cifs_put_tlink()` needs to be\\ncalled after successful calls to `cifs_sb_tlink()`. Three calls fail to\\nupdate refcount accordingly, leading to possible resource leaks.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/790282abe9d805f08618c1c24ea2529e7259b692\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/896bb31e1416f582503db1350cf1bd10dc64e5a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c2b77f42205ef485a647f62082c442c1cd69d3fc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d7dd034c14928306db1b46be277ae439b84dacf9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e15605b68b490186da2ad8029c0351a9cfb0b9af\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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