{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-98405",
  "modified": "2026-10-14T19:51:56Z",
  "upstream": [
    "CVE-2026-98405"
  ],
  "published": "2026-10-14T13:30:30Z",
  "summary": "smb: client: fix missing iov bounds check in parse_posix_sids()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix missing iov bounds check in parse_posix_sids()\n\nIn parse_posix_sids(), sidsbuf_end is calculated using the server-supplied\nout_len without being validated against the actual length of the received\niov (iov_len).\n\nIf a server provides an inflated out_len, sidsbuf_end will point past the\nend of the iov. This defeats the bounds guards in posix_info_sid_size(),\nallowing out-of-bounds reads into adjacent kernel memory.\n\nFix this by rejecting responses where the calculated sidsbuf_end would\nexceed the received iov boundaries or cause pointer wraparound.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.6.47-1+rpt1",
        "1:6.6.51-1+rpt1",
        "1:6.6.51-1+rpt2",
        "1:6.6.51-1+rpt3",
        "1:6.6.62-1+rpt1",
        "1:6.6.74-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.6.47+rpt-rpi-2712",
            "binary_version": "1:6.6.47-1+rpt1"
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          {
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            "binary_version": "1:6.6.47-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.47+rpt-rpi-v7",
            "binary_version": "1:6.6.47-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.47+rpt-rpi-v7l",
            "binary_version": "1:6.6.47-1+rpt1"
          },
          {
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            "binary_version": "1:6.6.47-1+rpt1"
          },
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            "binary_version": "1:6.6.51-1+rpt1"
          },
          {
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            "binary_version": "1:6.6.51-1+rpt1"
          },
          {
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            "binary_version": "1:6.6.51-1+rpt1"
          },
          {
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            "binary_version": "1:6.6.51-1+rpt1"
          },
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            "binary_version": "1:6.6.51-1+rpt1"
          },
          {
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            "binary_version": "1:6.6.51-1+rpt2"
          },
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            "binary_version": "1:6.6.51-1+rpt2"
          },
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            "binary_version": "1:6.6.51-1+rpt2"
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            "binary_version": "1:6.6.51-1+rpt3"
          },
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            "binary_version": "1:6.6.51-1+rpt3"
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            "binary_version": "1:6.6.51-1+rpt3"
          },
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            "binary_version": "1:6.6.74-1+rpt1"
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      "database_specific": {
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            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.158"
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    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98405"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b862996e5105be1293da9cdc85da77b76021c3bd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2f8ed71aaaba3bc8b19cd9930cc62e63e142b299"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/eac6917a42899aad0617bbf04798c5dd946a1fe5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-14T13:30:30Z"
  }
}