CVE-2026-110603
CVE-2026-110603 · LASzip through 3.5.0 Invalid Free via Truncated VLR Header in laszip_read_header
This page contains facts from public vulnerability sources. Check the original advisory before updating.
LASzip through 3.5.0 contains an invalid free vulnerability in laszip_read_header() that allows attackers to free uninitialized heap pointers via truncated variable length record data. Attackers can supply a crafted LAS/LAZ file with an inflated VLR count that, when opened and destroyed through the C API, crashes the process and corrupts the heap.
CVSS 5.8 · Medium · EPSS 0.2%
- Published
- Updated
Stack: system
Affected products and versions
laszip
- Versions
- ≥ 0, ≤ 3.5.0: Affected (semver)
No fix published
laszip Debian:13
- Versions
- 3.5.0+really3.5.0-1
- 3.5.0-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
laszip Debian:14
- Versions
- 3.5.0+really3.5.0-1
- 3.5.0-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
laszip Ubuntu:20.04:LTS
- Versions
- 3.4.1-2
- 3.4.3-1
- 3.4.3-1build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
laszip Ubuntu:22.04:LTS
- Versions
- 3.4.3-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
laszip Ubuntu:24.04:LTS
- Versions
- 3.5.0-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
laszip Ubuntu:26.10
- Versions
- 3.5.0+really3.5.0-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
laszip Ubuntu:26.04:LTS
- Versions
- 3.5.0-2
- 3.5.0+really3.5.0-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://github.com/LASzip/LASzip/commit/c9bfd3e68d65c84d513a2286ae06cbbe17afda02
- https://github.com/LASzip/LASzip/blob/3.5.0/src/laszip_dll.cpp#L3967-L3995
- https://github.com/LASzip/LASzip/blob/3.5.0/src/laszip_dll.cpp#L497-L511
- https://hackmd.io/@haind-pwn/laszip-vlr-uninitialized-free
- https://www.vulncheck.com/advisories/laszip-through-3.5.0-invalid-free-via-truncated-vlr-header-in-laszip-read-header
- https://nvd.nist.gov/vuln/detail/CVE-2026-110603