CVE-2026-68151 (GCVE-0-2026-68151)
Vulnerability from cvelistv5
Published
2026-08-10 11:59
Modified
2026-08-19 16:30
Severity ?
Summary
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").
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
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          "programFiles": [
            "fs/binfmt_elf_fdpic.c"
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      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\")."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:30:15.558Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9854538349aaf6fb88ed33b56987954ac1716151"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c31397b0a75310217f1f2f3c7bdfd8af67aec4c"
        },
        {
          "url": "https://git.kernel.org/stable/c/849a7bd9d266e43a457db5c6b322600f916a2127"
        },
        {
          "url": "https://git.kernel.org/stable/c/e4563e07ef5c938d5332c5c44721db976f214bc6"
        },
        {
          "url": "https://git.kernel.org/stable/c/21eaf5594a33d16343a011c752624099c30e918f"
        },
        {
          "url": "https://git.kernel.org/stable/c/89b9121c3b0162655fc2f190b714ae64f1aa8cae"
        },
        {
          "url": "https://git.kernel.org/stable/c/69ecc199880bf7e8d06224c82dc411d18f9285f8"
        },
        {
          "url": "https://git.kernel.org/stable/c/3349ef6a366a61d631f6a263d12cea240957719d"
        }
      ],
      "title": "binfmt_elf_fdpic: only honour the first PT_INTERP",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68151",
    "datePublished": "2026-08-10T11:59:16.878Z",
    "dateReserved": "2026-07-30T09:28:09.371Z",
    "dateUpdated": "2026-08-19T16:30:15.558Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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