Vulnerability-Lookup

GHSA-656H-699M-59G6

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

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

UDF symlink pathComponent header OOB read

udf_symlink_filler() can enter udf_pc_to_char() with a partial pathComponent header.

Validate that enough input remains for a complete pathComponent header before accessing it. Reject malformed symlink data that would otherwise make udf_pc_to_char() perform an out-of-bounds read.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-93055"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:59Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUDF symlink pathComponent header OOB read\n\nudf_symlink_filler() can enter udf_pc_to_char() with a partial pathComponent header.\n\nValidate that enough input remains for a complete pathComponent header\nbefore accessing it. Reject malformed symlink data that would otherwise\nmake udf_pc_to_char() perform an out-of-bounds read.",
  "id": "GHSA-656h-699m-59g6",
  "modified": "2026-09-17T18:32:08Z",
  "published": "2026-09-17T18:32:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93055"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48b2a74317e15f93983c74a5a07245bc94a00d39"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57371e743398e0d485f0f7beede1ade41f812324"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8da8fd3df9fc14cf79ca3a3978d27ba067985111"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b21cb958292ee1e02eb305ff9de09f2f7edd551a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d23eb7380d1594cda31a5dc8487dd2a5c8def8c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9f49c8b55debf1512f912077b6c759cc8b6d2e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee264227b656218bc1b257d8e4f83467f5f17723"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f44f5f795f1a56249821a05183347ea025855e31"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-93055 (GCVE-0-2026-93055)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10

Title

UDF symlink pathComponent header OOB read

Summary

In the Linux kernel, the following vulnerability has been resolved: UDF symlink pathComponent header OOB read udf_symlink_filler() can enter udf_pc_to_char() with a partial pathComponent header. Validate that enough input remains for a complete pathComponent header before accessing it. Reject malformed symlink data that would otherwise make udf_pc_to_char() perform an out-of-bounds read.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/d9f49c8b55debf151…
https://git.kernel.org/stable/c/48b2a74317e15f939…
https://git.kernel.org/stable/c/f44f5f795f1a56249…
https://git.kernel.org/stable/c/57371e743398e0d48…
https://git.kernel.org/stable/c/ee264227b656218bc…
https://git.kernel.org/stable/c/8da8fd3df9fc14cf7…
https://git.kernel.org/stable/c/b21cb958292ee1e02…
https://git.kernel.org/stable/c/d23eb7380d1594cda…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d9f49c8b55debf1512f912077b6c759cc8b6d2e0 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 48b2a74317e15f93983c74a5a07245bc94a00d39 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f44f5f795f1a56249821a05183347ea025855e31 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 57371e743398e0d485f0f7beede1ade41f812324 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ee264227b656218bc1b257d8e4f83467f5f17723 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8da8fd3df9fc14cf79ca3a3978d27ba067985111 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b21cb958292ee1e02eb305ff9de09f2f7edd551a (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d23eb7380d1594cda31a5dc8487dd2a5c8def8c7 (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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JSON

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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/udf/symlink.c"
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              "status": "unaffected",
              "version": "0",
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              "status": "unaffected",
              "version": "5.15.221",
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              "status": "unaffected",
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              "versionType": "semver"
            },
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            },
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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