CVE-2026-5590
6.4
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| zephyrproject-rtos | Zephyr | * <= 4.3 | affected |
Weaknesses
- CWE-476: NULL Pointer Dereference
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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