Description
An integer underflow vulnerability exists in the `nextstate()` function in `gpsd/packet.c` of gpsd versions prior to commit `ffa1d6f40bca0b035fc7f5e563160ebb67199da7`. When parsing a NAVCOM packet, the payload length is calculated using `lexer->length = (size_t)c - 4` without checking if the input byte `c` is less than 4. This results in an unsigned integer underflow, setting `lexer->length` to a very large value (near `SIZE_MAX`). The parser then enters a loop attempting to consume this massive number of bytes, causing 100% CPU utilization and a Denial of Service (DoS) condition.
INFO
Published Date :
2026-01-02T00:00:00.000Z
Last Modified :
2026-01-06T17:40:49.246Z
Source :
mitre
AFFECTED PRODUCTS
The following products are affected by CVE-2025-67269 vulnerability.
| Vendors | Products |
|---|---|
| Gpsd Project |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-67269.
