{"schema_version":1,"title":"Grzegorz Kostka Lwext4 vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 3 vulnerabilities in Grzegorz Kostka Lwext4: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2025-70101, was published on 3 June 2026.","url":"https://junglewise.ai/threats/technologies/lwext4","json_url":"https://junglewise.ai/threats/technologies/lwext4.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/lwext4","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":0,"all_time":3,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":3},"latest":[{"cve":"CVE-2025-70101","cvss":5.5,"slug":"cve-2025-70101-gkostka-lwext4-out-of-bounds-read-in-ext4-ext-binsearch-idx","title":"gkostka lwext4 out-of-bounds read in ext4_ext_binsearch_idx","severity":"info","exploited":false,"published_at":"2026-06-03T14:16:31.34+00:00","url":"https://junglewise.ai/threats/cve-2025-70101-gkostka-lwext4-out-of-bounds-read-in-ext4-ext-binsearch-idx"},{"cve":"CVE-2025-70100","cvss":5.5,"slug":"cve-2025-70100-lwext4-divide-by-zero-in-ext4-block-set-lb-size","title":"lwext4 divide-by-zero in ext4_block_set_lb_size","severity":"info","exploited":false,"published_at":"2026-06-03T14:16:31.217+00:00","url":"https://junglewise.ai/threats/cve-2025-70100-lwext4-divide-by-zero-in-ext4-block-set-lb-size"},{"cve":"CVE-2025-70099","cvss":0,"slug":"cve-2025-70099-lwext4-null-pointer-dereference-in-ext4-dir-en-get-name-len","title":"lwext4 NULL pointer dereference in ext4_dir_en_get_name_len","severity":"info","exploited":false,"published_at":"2026-06-01T21:16:24.187+00:00","url":"https://junglewise.ai/threats/cve-2025-70099-lwext4-null-pointer-dereference-in-ext4-dir-en-get-name-len"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"Grzegorz Kostka Lwext4","slug":"lwext4","vendor":{"name":"Grzegorz Kostka","slug":"grzegorz-kostka","url":"https://junglewise.ai/threats/vendors/grzegorz-kostka"},"aliases":[],"category":"library","homepage":"https://github.com/gkostka/lwext4","repo_url":"https://github.com/gkostka/lwext4","description":"A lightweight ext2/3/4 filesystem library for microcontrollers and embedded systems.","url":"https://junglewise.ai/threats/technologies/lwext4"},"most_severe":[{"cve":"CVE-2025-70101","cvss":5.5,"slug":"cve-2025-70101-gkostka-lwext4-out-of-bounds-read-in-ext4-ext-binsearch-idx","title":"gkostka lwext4 out-of-bounds read in ext4_ext_binsearch_idx","severity":"info","exploited":false,"published_at":"2026-06-03T14:16:31.34+00:00","url":"https://junglewise.ai/threats/cve-2025-70101-gkostka-lwext4-out-of-bounds-read-in-ext4-ext-binsearch-idx"},{"cve":"CVE-2025-70100","cvss":5.5,"slug":"cve-2025-70100-lwext4-divide-by-zero-in-ext4-block-set-lb-size","title":"lwext4 divide-by-zero in ext4_block_set_lb_size","severity":"info","exploited":false,"published_at":"2026-06-03T14:16:31.217+00:00","url":"https://junglewise.ai/threats/cve-2025-70100-lwext4-divide-by-zero-in-ext4-block-set-lb-size"},{"cve":"CVE-2025-70099","cvss":0,"slug":"cve-2025-70099-lwext4-null-pointer-dereference-in-ext4-dir-en-get-name-len","title":"lwext4 NULL pointer dereference in ext4_dir_en_get_name_len","severity":"info","exploited":false,"published_at":"2026-06-01T21:16:24.187+00:00","url":"https://junglewise.ai/threats/cve-2025-70099-lwext4-null-pointer-dereference-in-ext4-dir-en-get-name-len"}],"generated_at":"2026-09-26T09:11:00.170868+00:00"}