{"id":"CVE-2026-5590","revision":"13d676cee0534a498ccfbe7ba0a525c7","records":[{"revision":"13d676cee0534a498ccfbe7ba0a525c7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-5590","aliases":[],"title":"net: ip/tcp: Null pointer dereference can be triggered by a race condition","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.","state":0,"publishedAt":"2026-04-05T03:34:56.323+00:00","modifiedAt":"2026-10-15T22:10:27.831+00:00","affected":[{"ecosystem":"Vendor product","name":"Zephyr","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageName\": \"Zephyr\",\n                    \"product\": \"Zephyr\",\n                    \"repo\": \"https://github.com/zephyrproject-rtos/zephyr\",\n                    \"vendor\": \"zephyrproject-rtos\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"4.3.1\",\n                            \"status\": \"affected\",\n                            \"version\": \"*\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H","score":6.4,"severity":"MEDIUM"}],"references":["https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-4vqm-pw24-g9jp"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-5590","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-5590","identifiers":["CVE-2026-5590"]},"retained":false,"historicalAffected":[]}],"coverage":[]}