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.
Metrics
Affected Vendors & Products
References
History
Tue, 07 Apr 2026 00:00:00 +0000
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Zephyrproject-rtos
Zephyrproject-rtos zephyr |
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Zephyrproject-rtos
Zephyrproject-rtos zephyr |
Mon, 06 Apr 2026 15:30:00 +0000
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ssvc
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Sun, 05 Apr 2026 04:30:00 +0000
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| 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. | |
| Title | net: ip/tcp: Null pointer dereference can be triggered by a race condition | |
| Weaknesses | CWE-476 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: zephyr
Published: 2026-04-05T03:34:56.323Z
Updated: 2026-04-06T14:22:23.284Z
Reserved: 2026-04-05T03:23:27.992Z
Link: CVE-2026-5590
Updated: 2026-04-06T14:22:16.443Z
Status : Received
Published: 2026-04-05T04:16:16.370
Modified: 2026-04-05T04:16:16.370
Link: CVE-2026-5590
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