CVE-2026-46185 (GCVE-0-2026-46185)
Vulnerability from cvelistv5
Published
2026-05-28 09:36
Modified
2026-06-14 18:01
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: smb/client: fix out-of-bounds read in symlink_data() Since smb2_check_message() returns success without length validation for the symlink error response, in symlink_data() it is possible for iov->iov_len to be smaller than sizeof(struct smb2_err_rsp). If the buffer only contains the base SMB2 header (64 bytes), accessing err->ErrorContextCount (at offset 66) or err->ByteCount later in symlink_data() will cause an out-of-bounds read.
Impacted products
Vendor Product Version
Linux Linux Version: 76894f3e2f71177747b8b4763fb180e800279585
Version: 76894f3e2f71177747b8b4763fb180e800279585
Version: 76894f3e2f71177747b8b4763fb180e800279585
Version: 76894f3e2f71177747b8b4763fb180e800279585
Version: 76894f3e2f71177747b8b4763fb180e800279585
Version: 76894f3e2f71177747b8b4763fb180e800279585
Version: 2d046892a493d9760c35fdaefc3017f27f91b621
Version: 6.0.16   
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{
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          "vendor": "Linux",
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            },
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              "status": "unaffected",
              "version": "6.12.88",
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            },
            {
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "vulnerable": true
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/client: fix out-of-bounds read in symlink_data()\n\nSince smb2_check_message() returns success without length validation for\nthe symlink error response, in symlink_data() it is possible for\niov-\u003eiov_len to be smaller than sizeof(struct smb2_err_rsp). If the buffer\nonly contains the base SMB2 header (64 bytes), accessing\nerr-\u003eErrorContextCount (at offset 66) or err-\u003eByteCount later in\nsymlink_data() will cause an out-of-bounds read."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T18:01:04.745Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2be11faf79e49fb8250a181ff0b4d2b2f084af83"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef6495d4df6e7af8f3de67e65150881c880f696c"
        },
        {
          "url": "https://git.kernel.org/stable/c/15dc0a4de743a1aaa7b859b3aea79f08c695396c"
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        {
          "url": "https://git.kernel.org/stable/c/b8c8a704f0bc133deb171f6aeb6f3a684203e212"
        },
        {
          "url": "https://git.kernel.org/stable/c/b9561402489d41149f63e001a74384863b7b30a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d62b8d236fab503c6fec1d3e9a38bea71feaca20"
        }
      ],
      "title": "smb/client: fix out-of-bounds read in symlink_data()",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46185",
    "datePublished": "2026-05-28T09:36:39.318Z",
    "dateReserved": "2026-05-13T15:03:33.103Z",
    "dateUpdated": "2026-06-14T18:01:04.745Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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