{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()\n\ntarget_tg_pt_gp_members_show() formats LUN paths with snprintf() into a\n256-byte stack buffer, then will memcpy() cur_len bytes from that\nbuffer.  snprintf() returns the length the output would have had, which\ncan exceed the buffer size when the fabric WWN is long because iSCSI IQN\nnames can be up to 223 bytes.  The check at the memcpy() site only\nguards the destination page write, not the source read, so memcpy() will\nread past the stack buffer and copy adjacent stack contents to the sysfs\nreader, which when CONFIG_FORTIFY_SOURCE is enabled, fortify_panic()\nwill be triggered.\n\nCommit 27e06650a5ea (\"scsi: target: target_core_configfs: Add length\ncheck to avoid buffer overflow\") added the same bound to the\ntarget_lu_gp_members_show() but the tg_pt_gp variant was missed so\nresolve that here."
    }
  ],
  "id": "CVE-2026-46149",
  "lastModified": "2026-05-28T13:44:01.663",
  "metrics": {},
  "published": "2026-05-28T10:16:30.513",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/00d91bfdce5033f5d9b4915638ae9b0553848b5d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1f678d13e939f91840cb1ebe9b88544923539d3c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/72cc5ea7ef32bb5fa38bf0dd2e56fcd73aa8c89e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/772a896a56e0e3ef9424a025cec9176f9d8f4552"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e501154f9d82c95d2719bcbbaf679d8fd3226ef7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-46149"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:30Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()\n\ntarget_tg_pt_gp_members_show() formats LUN paths with snprintf() into a\n256-byte stack buffer, then will memcpy() cur_len bytes from that\nbuffer.  snprintf() returns the length the output would have had, which\ncan exceed the buffer size when the fabric WWN is long because iSCSI IQN\nnames can be up to 223 bytes.  The check at the memcpy() site only\nguards the destination page write, not the source read, so memcpy() will\nread past the stack buffer and copy adjacent stack contents to the sysfs\nreader, which when CONFIG_FORTIFY_SOURCE is enabled, fortify_panic()\nwill be triggered.\n\nCommit 27e06650a5ea (\"scsi: target: target_core_configfs: Add length\ncheck to avoid buffer overflow\") added the same bound to the\ntarget_lu_gp_members_show() but the tg_pt_gp variant was missed so\nresolve that here.",
  "id": "GHSA-vvx9-xfcg-g62v",
  "modified": "2026-05-28T12:30:30Z",
  "published": "2026-05-28T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46149"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/00d91bfdce5033f5d9b4915638ae9b0553848b5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f678d13e939f91840cb1ebe9b88544923539d3c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72cc5ea7ef32bb5fa38bf0dd2e56fcd73aa8c89e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/772a896a56e0e3ef9424a025cec9176f9d8f4552"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e501154f9d82c95d2719bcbbaf679d8fd3226ef7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
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    "category": "csaf_vex",
    "csaf_version": "2.0",
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        "url": "https://www.first.org/tlp/"
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    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-46149 scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46149.json"
      },
      {
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        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()",
    "tracking": {
      "current_release_date": "2026-05-29T01:05:21.000Z",
      "generator": {
        "date": "2026-05-29T07:23:45.801Z",
        "engine": {
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      "initial_release_date": "2026-05-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-05-29T01:05:21.000Z",
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          "number": "1",
          "summary": "Information published."
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            "category": "product_name",
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        "category": "vendor",
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-46149",
      "notes": [
        {
          "category": "general",
          "text": "Linux",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "under_investigation": [
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-46149 scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46149.json"
        }
      ],
      "title": "scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()"
    }
  ]
}