CVE-2026-5590
MEDIUM EPSS 5.4%
Published Apr 5, 20262mo ago · Modified Jun 17, 20262w ago
6.4 CVSS 3.1
Published Apr 5, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability High
Threat Intelligence
EPSS Exploit Probability
5.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-476 NULL Pointer Dereference Memory Safety
References 1
- github.com https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-4vqm-pw24-g9jp
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.