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https://issues.oss-fuzz.com/issues/477971098

Reference Info: 477971098 gpsd:FuzzDrivers: Use-of-uninitialized-value in
rtcm2_unpack
component:  Public Trackers > 1362134 > OSS Fuzz
status:  New
reporter:  [email protected]
cc:  [email protected], [email protected], [email protected], and 2
more
collaborators:  [email protected]
type:  Vulnerability
access level:  Limited visibility
priority:  P2
severity:  S2
hotlist:  Reproducible, Stability-Memory-MemorySanitizer
retention:  Component default
Project:  gpsd
Reported:  Jan 23, 2026

[email protected] added comment #1:
Detailed Report: https://oss-fuzz.com/testcase?key=6328987071873024

Project: gpsd
Fuzzing Engine: libFuzzer
Fuzz Target: FuzzDrivers
Job Type: libfuzzer_msan_gpsd
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address:
Crash State:
  rtcm2_unpack
  rtcm104v2_analyze
  gpsd_poll

Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed:
https://oss-fuzz.com/revisions?job=libfuzzer_msan_gpsd&range=202601200633:202601210647

Reproducer Testcase:
https://oss-fuzz.com/download?testcase_id=6328987071873024

Issue filed automatically.

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