CVE-2025-70101 | BDVDB-2026-337396 Detail

Description#

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.

Impact#

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Exploit#

History#

1. Version 12026-06-03Record published in the CVE List.
2. Version 22026-06-29Most recent update recorded in the CVE List.