CVE-2025-68239 (GCVE-0-2025-68239)

Vulnerability from cvelistv5 – Published: 2025-12-16 14:21 – Updated: 2026-10-15 01:09
VLAI
Title
binfmt_misc: restore write access before closing files opened by open_exec()
Summary
In the Linux kernel, the following vulnerability has been resolved: binfmt_misc: restore write access before closing files opened by open_exec() bm_register_write() opens an executable file using open_exec(), which internally calls do_open_execat() and denies write access on the file to avoid modification while it is being executed. However, when an error occurs, bm_register_write() closes the file using filp_close() directly. This does not restore the write permission, which may cause subsequent write operations on the same file to fail. Fix this by calling exe_file_allow_write_access() before filp_close() to restore the write permission properly.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e7850f4d844e0acfac7e570af611d89deade3146 , < 54274ff90488b6c0f595a6518faed3cf0bc966eb (git)
Affected: e7850f4d844e0acfac7e570af611d89deade3146 , < 480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f (git)
Affected: e7850f4d844e0acfac7e570af611d89deade3146 , < fbab8c08e1a6dbaef81e22d672a7647553101d16 (git)
Affected: e7850f4d844e0acfac7e570af611d89deade3146 , < 6cce7bc7fac8471c832696720d9c8f2a976d9c54 (git)
Affected: e7850f4d844e0acfac7e570af611d89deade3146 , < e785f552ab04dbca01d31f0334f4561240b04459 (git)
Affected: e7850f4d844e0acfac7e570af611d89deade3146 , < 90f601b497d76f40fa66795c3ecf625b6aced9fd (git)
Affected: 467a50d5db7deaf656e18a1f633be9ecd94b393a (git)
Affected: 4a8b4124ea4156ca52918b66c750a69c6d932aa5 (git)
Affected: 3fe116e33a855bbfdd32dc207e9be2a41e3ed3a6 (git)
Affected: c0e0ab60d0b15469e69db93215dad009999f5a5b (git)
Affected: 5ab9464a2a3c538eedbb438f1802f2fd98d0953f (git)
Affected: d28492be82e19fc69cc69975fc2052b37ef0c821 (git)
Affected: 4.9.262 , < 4.10 (semver)
Affected: 4.14.226 , < 4.15 (semver)
Affected: 4.19.181 , < 4.20 (semver)
Affected: 5.4.106 , < 5.5 (semver)
Affected: 5.10.24 , < 5.11 (semver)
Affected: 5.11.7 , < 5.12 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.17.9 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinfmt_misc: restore write access before closing files opened by open_exec()\n\nbm_register_write() opens an executable file using open_exec(), which\ninternally calls do_open_execat() and denies write access on the file to\navoid modification while it is being executed.\n\nHowever, when an error occurs, bm_register_write() closes the file using\nfilp_close() directly. This does not restore the write permission, which\nmay cause subsequent write operations on the same file to fail.\n\nFix this by calling exe_file_allow_write_access() before filp_close() to\nrestore the write permission properly."
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        "id": "CVE-2025-68239",
        "lastModified": "2026-10-15T02:18:10.687",
        "metrics": {},
        "published": "2025-12-16T15:15:53.063",
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          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/54274ff90488b6c0f595a6518faed3cf0bc966eb"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6cce7bc7fac8471c832696720d9c8f2a976d9c54"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/90f601b497d76f40fa66795c3ecf625b6aced9fd"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e785f552ab04dbca01d31f0334f4561240b04459"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/fbab8c08e1a6dbaef81e22d672a7647553101d16"
          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-08T12:23:19+00:00",
      "cve": "CVE-2025-68239",
      "id": "CVE-2025-68239",
      "initial_release_date": "2025-12-16T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: binfmt_misc: restore write access before closing files opened by open_exec()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68239.json",
      "version": "3"
    }
  }
}



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