CVE-2026-5590
Medium · 6.4CVSS
6.4
EPSS
0.3%
Published
Apr 5, 2026
CISA due date
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The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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Related vulnerabilities
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