Vulnerability-Lookup

brew-glibc-cve-2025-15281

Vulnerability from osv_homebrew

Published

2026-06-28 21:29

Modified

2026-08-05 16:54

Summary

wordexp with WRDE_REUSE and WRDE_APPEND may return uninitialized memory

Details

Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

URL

Type

	http://www.openwall.com/lists/oss-security/2026/01/20/3	WEB
	https://github.com/CVEProject/cvelistV5/tree/main…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-15281	ADVISORY
	https://sourceware.org/bugzilla/show_bug.cgi?id=33814	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "patch",
        "patches": [
          {
            "apply": [
              "patches/any/CVE-2024-2961.patch",
              "patches/any/CVE-2024-33599.patch",
              "patches/any/CVE-2024-33600_1.patch",
              "patches/any/CVE-2024-33600_2.patch",
              "patches/any/CVE-2024-33601_33602.patch",
              "patches/any/CVE-2025-0395.patch",
              "patches/any/CVE-2025-5702.patch",
              "patches/any/CVE-2025-8058.patch",
              "patches/CVE-2025-15281.patch",
              "patches/CVE-2026-0861.patch",
              "patches/CVE-2026-0915.patch",
              "patches/CVE-2026-4046.patch",
              "patches/CVE-2026-5450.patch",
              "patches/CVE-2026-5928.patch",
              "patches/CVE-2026-6238-pre1.patch",
              "patches/CVE-2026-6238-pre2.patch",
              "patches/CVE-2026-6238-pre3.patch",
              "patches/CVE-2026-6238-pre4.patch",
              "patches/CVE-2026-5435.patch",
              "patches/CVE-2026-6238-1.patch",
              "patches/CVE-2026-6238-2.patch",
              "patches/CVE-2026-443x.patch"
            ],
            "type": "backport",
            "url": "https://archive.ubuntu.com/ubuntu/pool/main/g/glibc/glibc_2.39-0ubuntu8.8.debian.tar.xz"
          }
        ]
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "glibc",
        "purl": "pkg:brew/glibc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.39"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "source": "generated"
  },
  "details": "Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.",
  "id": "BREW-glibc-CVE-2025-15281",
  "modified": "2026-08-05T16:54:10Z",
  "published": "2026-06-28T21:29:54Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/01/20/3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/15xxx/CVE-2025-15281.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-15281"
    },
    {
      "type": "REPORT",
      "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=33814"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wordexp with WRDE_REUSE and WRDE_APPEND may return uninitialized memory",
  "upstream": [
    "CVE-2025-15281"
  ]
}

CVE-2025-15281 (GCVE-0-2025-15281)

Vulnerability from cvelistv5 – Published: 2026-01-20 13:22 – Updated: 2026-01-22 19:21

Title

wordexp with WRDE_REUSE and WRDE_APPEND may return uninitialized memory

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-22 19:21 UTC

CWE

CWE-908 - Use of Uninitialized Resource

Assigner

glibc redhat root

References

2 references

URL	Tags
https://sourceware.org/bugzilla/show_bug.cgi?id=33814
http://www.openwall.com/lists/oss-security/2026/01/20/3

Impacted products

1 product

Vendor	Product	Version
The GNU C Library	glibc	Affected: 2.0 , ≤ 2.42 (custom)

Credits

Vitaly Simonovich

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-01-20T17:08:42.853Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/01/20/3"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-15281",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-22T19:21:34.491759Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-22T19:21:38.455Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "glibc",
          "vendor": "The GNU C Library",
          "versions": [
            {
              "lessThanOrEqual": "2.42",
              "status": "affected",
              "version": "2.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Vitaly Simonovich"
        }
      ],
      "descriptions": [
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          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "\u003cdiv\u003eCalling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.\u003c/div\u003e"
            }
          ],
          "value": "Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on subsequent calls to wordfree may abort the process."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-129",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-129 Pointer Manipulation"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-908",
              "description": "CWE-908 Use of Uninitialized Resource",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-01-20T13:22:46.495Z",
        "orgId": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
        "shortName": "glibc"
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      "references": [
        {
          "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=33814"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "wordexp with WRDE_REUSE and WRDE_APPEND may return uninitialized memory",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
    "assignerShortName": "glibc",
    "cveId": "CVE-2025-15281",
    "datePublished": "2026-01-20T13:22:46.495Z",
    "dateReserved": "2025-12-29T20:07:29.736Z",
    "dateUpdated": "2026-01-22T19:21:38.455Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.