libLAS through 1.8.1 Heap Out-of-Bounds Write via LASSchema VLR

Advisories

libLAS through 1.8.1 Heap Out-of-Bounds Write via LASSchema VLR

Severity: medium
Date: 10/18/2026
Affecting: libLAS <= 1.8.1
CVE: CVE-2026-112059
CWE: CWE-787 Out-of-bounds Write
CVSS: 6.9
CVSS V4 Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
References: https://hackmd.io/@haindpwn/liblas-record-length-truncation-heap-overflow
https://github.com/libLAS/libLAS/blob/1.8.1/src/detail/reader/reader.cpp
https://github.com/libLAS/libLAS/blob/1.8.1/src/header.cpp
Credit: HaiND from the Post and Telecommunication Institute of Technology
Description: libLAS through 1.8.1 contains a heap out-of-bounds write vulnerability in the point record reader caused by truncating the schema byte size to 16 bits when sizing the point buffer. Attackers can craft a .las file with a LASSchema variable length record whose schema exceeds 65535 bytes, so tools like lasinfo, las2las, or las2txt write attacker-controlled bytes past the heap buffer, causing memory corruption and crashes.

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