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High · 7.3 CVE-2026-1679 EUVD-2026-16903

net: eswifi socket send payload length not bounded

Published Mar 27, 2026 · Updated Oct 15, 2026 · Assigned by zephyr

Description

The eswifi socket offload driver copies user-provided payloads into a fixed buffer without checking available space; oversized sends overflow `eswifi->buf`, corrupting kernel memory (CWE-120). Exploit requires local code that can call the socket send API; no remote attacker can reach it directly.

Affected products

VendorProductAffectedFixed
zephyrproject-rtos Zephyr — —

References