CVE-2026-67607: LightFTP 2.3.1 contains a race condition vulnerability that allows remote attackers to crash the server by racing a fresh connection that reuses the FTP context against an in-progr
LightFTP 2.3.1 contains a race condition vulnerability that allows remote attackers to crash the server by racing a fresh connection that reuses the FTP context against an in-progress ABRT cleanup. Attackers can exploit the unprotected re-check of WorkerThreadId between worker_thread_cleanup() and pthread_join() outside of MTLock to cause pthread_join() to operate on an invalid thread ID, resulting in a server crash. CVE-2024-11144 identifies an incomplete fix of this vulnerability.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-67607
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-67607 | coverage & exploitation status | NVD · CVE.org |
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