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Medium

LiME through 1.12.0 Arbitrary File Overwrite via Symlink Following

Type: advisorySources: OSV

LiME through 1.12.0 fails to validate the disk acquisition output path and does not use O_NOFOLLOW when opening the operator-supplied path parameter, allowing unprivileged local users to overwrite arbitrary root-owned files. An attacker who controls the output directory can create a symbolic link with the expected filename pointing to any root-owned file, and when the acquisition runs in kernel context, LiME follows the link and truncates the target file with the memory acquisition stream.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-85092
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 19:29 UTC · Revision 1

Source evidence

LiME through 1.12.0 Arbitrary File Overwrite via Symlink Following

core-osv · Original source

Published 3 Sept 2026, 01:04 UTC

LiME through 1.12.0 fails to validate the disk acquisition output path and does not use O_NOFOLLOW when opening the operator-supplied path parameter, allowing unprivileged local users to overwrite arbitrary root-owned files. An attacker who controls the output directory can create a symbolic link with the expected filename pointing to any root-owned file, and when the acquisition runs in kernel context, LiME follows the link and truncates the target file with the memory acquisition stream.

osv:CVE-2026-85092
Complete source record
{
  "id": "f7e58e39825a19597e3e44f8dbebe1405c1d930b56bd4c09ca1288cbf1c12220",
  "url": "https://osv.dev/vulnerability/CVE-2026-85092",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "LiME through 1.12.0 Arbitrary File Overwrite via Symlink Following",
    "summary": "LiME through 1.12.0 fails to validate the disk acquisition output path and does not use O_NOFOLLOW when opening the operator-supplied path parameter, allowing unprivileged local users to overwrite arbitrary root-owned files. An attacker who controls the output directory can create a symbolic link with the expected filename pointing to any root-owned file, and when the acquisition runs in kernel context, LiME follows the link and truncates the target file with the memory acquisition stream.",
    "evidence": "osv:CVE-2026-85092",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-85092",
      "aliases": [
        "CVE-2026-85092"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/jtsylve/lime",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "a1205ccf98216095623280a2a026e0eee60916af"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.12.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.12.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.12.0",
            "v1.11.0",
            "v1.10.1",
            "v1.10.0",
            "v1.9.1",
            "v1.9",
            "v1.8.1",
            "v1.8",
            "v1.7.8",
            "v1.7.7",
            "v1.7.6",
            "v1.7.5",
            "1.7.5",
            "v1.7.4",
            "v1.7.3",
            "v1.7.2",
            "v1.7.1",
            "v1.7",
            "v1.5",
            "v1.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85092.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.625903556Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85092.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-85092",
        "https://www.vulncheck.com/advisories/lime-through-1.12.0-arbitrary-file-overwrite-via-symlink-following",
        "https://github.com/jtsylve/LiME",
        "https://github.com/jtsylve/LiME/blob/v1.12.0/src/disk.c#L63",
        "https://gist.github.com/thesmartshadow/5355949144749b431da41490b63598f5"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-59"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85092.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-85092",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489172,
  "published_at": "2026-09-03T01:04:45.189+00:00"
}