GHSA-VRXM-Q8GM-FCVQ

Vulnerability from github – Published: 2026-08-10 15:33 – Updated: 2026-08-19 18:32
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

binfmt_elf_fdpic: only honour the first PT_INTERP

The program header scan handles PT_INTERP from a switch nested in the scan loop, so its break leaves the switch and not the loop. A binary carrying more than one PT_INTERP runs the case again and overwrites both interpreter_name and interpreter. The previous name allocation leaks and so does the previous interpreter reference, along with the write denial open_exec() took on it. The denial is never released, so the file stays unwritable for as long as the system runs.

An unprivileged caller reaches this with a crafted binary and repeats it at will. binfmt_elf stops at the first PT_INTERP. Do the same here.

The flaw dates back to the driver's introduction in the pre-git history tree introduced in v2.6.11 by 91808d6ebe39 ("[PATCH] FRV: Add FDPIC ELF binary format driver").

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{
  "affected": [],
  "aliases": [
    "CVE-2026-68151"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T13:20:01Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinfmt_elf_fdpic: only honour the first PT_INTERP\n\nThe program header scan handles PT_INTERP from a switch nested in the\nscan loop, so its break leaves the switch and not the loop. A binary\ncarrying more than one PT_INTERP runs the case again and overwrites both\ninterpreter_name and interpreter. The previous name allocation leaks and\nso does the previous interpreter reference, along with the write denial\nopen_exec() took on it. The denial is never released, so the file stays\nunwritable for as long as the system runs.\n\nAn unprivileged caller reaches this with a crafted binary and repeats it\nat will. binfmt_elf stops at the first PT_INTERP. Do the same here.\n\nThe flaw dates back to the driver\u0027s introduction in the pre-git history\ntree introduced in v2.6.11 by 91808d6ebe39 (\"[PATCH] FRV: Add FDPIC ELF\nbinary format driver\").",
  "id": "GHSA-vrxm-q8gm-fcvq",
  "modified": "2026-08-19T18:32:07Z",
  "published": "2026-08-10T15:33:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68151"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21eaf5594a33d16343a011c752624099c30e918f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3349ef6a366a61d631f6a263d12cea240957719d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c31397b0a75310217f1f2f3c7bdfd8af67aec4c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69ecc199880bf7e8d06224c82dc411d18f9285f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/849a7bd9d266e43a457db5c6b322600f916a2127"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89b9121c3b0162655fc2f190b714ae64f1aa8cae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9854538349aaf6fb88ed33b56987954ac1716151"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4563e07ef5c938d5332c5c44721db976f214bc6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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