CVE-2026-5590
net: ip/tcp: Null pointer dereference can be triggered by a race condition
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 6.4EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
05 Apr 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
Affected products
zephyrproject-rtos · ZephyrWant to know if your infrastructure is exposed to this?
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