CVE-2025-70101
⚪ Do wiadomości
Błąd odczytu poza granicami w lwext4 1.0.0 pozwala na zdalne wywołanie odmowy usługi.
CVSS
6.5
EPSS
0.3%
Exploit
poc
Vendor
gkostka
Opis źródłowy (NVD)
An out-of-bounds read in the ext4_ext_binsearch_idx function in src/ext4_extent.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by supplying a specially crafted ext4 filesystem image. The vulnerability occurs due to insufficient validation of extent header fields before performing a binary search over extent index entries, which can result in invalid pointer calculations and an out-of-bounds memory read during extent tree traversal.
dos exploit
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 6.5 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 0.3% |
| Opublikowano (NVD) | 2026-06-03 14:16:31 UTC |
| Ostatnia modyfikacja (NVD) | 2026-06-29 20:17:32 UTC |
Referencje
- https://github.com/gkostka/lwext4/issues/91 (cve@mitre.org) [Exploit, Issue Tracking, Patch]
- https://github.com/sigdevel/pocs/blob/main/res/lwext4/3/sig11_lwext4_ext4_extent_815 (cve@mitre.org) [Exploit]
- https://infosec.exchange/@sigdevel/116668958927817708 (cve@mitre.org) [Exploit, Patch, Third Party Advisory]
- http://www.openwall.com/lists/oss-security/2026/06/29/6 (af854a3a-2127-422b-91ae-364da2661108)