VULNERABILITY INTELLIGENCE

CVE-2026-5590

CVSS score6.4 MEDIUM
EPSS probability0.20%
CISA KEVNot currently listed
Published2026-04-05
Last modified2026-10-15
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H

Description

A race condition during TCP connection teardown can cause tcp_recv() to operate on a connection that has already been released. If tcp_conn_search() returns NULL while processing a SYN packet, a NULL pointer derived from stale context data is passed to tcp_backlog_is_full() and dereferenced without validation, leading to a crash.

Weakness classification

  • vulnerabilities@zephyrproject.org: CWE-476

Primary references