CVE-2025-70099

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A NULL pointer dereference in the ext4_dir_en_get_name_len function in include/ext4_dir.h of lwext4 1.0.0 allows attackers to cause a denial of service by supplying a specially crafted EXT4 filesystem image with malformed directory entries. During directory iteration, the code may fail to validate the directory entry pointer before accessing the name_len field, resulting in a segmentation fault. This affects versions based on (or equivalent to) the 2016-era codebase (1.0.0)."}, {"lang": "es", "value": "Una desreferencia de puntero NULL en la funci\u00f3n ext4_dir_en_get_name_len en include/ext4_dir.h de lwext4 1.0.0 permite a los atacantes causar una denegaci\u00f3n de servicio al proporcionar una imagen de sistema de archivos EXT4 especialmente dise\u00f1ada con entradas de directorio malformadas. Durante la iteraci\u00f3n del directorio, el c\u00f3digo puede no validar el puntero de entrada del directorio antes de acceder al campo name_len, lo que resulta en una falla de segmentaci\u00f3n. Esto afecta a las versiones basadas en (o equivalentes a) la base de c\u00f3digo de la era 2016 (1.0.0)."}], "id": "CVE-2025-70099", "lastModified": "2026-07-22T08:10:00.117", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-70099", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-02T15:19:41.112738Z", "version": "2.0.3"}}]}, "published": "2026-06-01T21:16:24.187", "references": [{"source": "cve@mitre.org", "url": "https://github.com/gkostka/lwext4/issues/89"}, {"source": "cve@mitre.org", "url": "https://github.com/sigdevel/pocs/blob/main/res/lwext4/1/sig11_2_1_lwext4_ext4_dir_h_126"}, {"source": "cve@mitre.org", "url": "https://infosec.exchange/@sigdevel/116668939725424227"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/06/29/4"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/gkostka/lwext4/issues/89"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.0.0"}}], "enrichment": {"confidence": 85.0, "confidence_source": "inferred", "scores": [{"score": 85.0, "source": "inferred"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "lwext4", "vendor": "gkostka"}], "created": "2026-06-01T21:30:26.418996+00:00", "updated": "2026-06-02T20:55:13.513496+00:00", "vendors": ["gkostka", "gkostka$PRODUCT$lwext4"]}