CVE-2025-67269 - GPSD Integer Underflow Vulnerability

CVE-2025-67269 - GPSD Integer Underflow Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Fri, 01/02/2026 - 19:55
CVE ID : CVE-2025-67269
Published : Jan. 2, 2026, 4:17 p.m. | 1 hour, 6 minutes ago
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.
Severity: 0.0 | NA
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