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CVE-2026-5590

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

CVSS 6.4 MEDIUMEPSS 0.2%CWE-476
Vexday Risk Score
13Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS 6.4EPSS 0.2%KEV nãoPoC Nuclei Metasploit Patch
Ciclo de vida
05 abr 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
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

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