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CVE PROGRAM SOURCE RECORD6.4 Medium

CVE-2026-5590

net: ip/tcp: Null pointer dereference can be triggered by a race condition

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

zephyrproject-rtos Zephyr

Default version status: unaffected

  • * to < 4.3.1affected

References