| Package | Affected versions | Patched versions |
|---|---|---|
| freertos-plus-tcp | ≥ 4.0.0, < 4.2.6≥ 4.3.0, < 4.4.1 | 4.2.64.4.1 |
Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the device's IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service (permanent IP task freeze requiring hardware reset) by sending a single crafted DHCPv6 packet. The issue is present whenever DHCPv6 is enabled. To mitigate this issue, users should upgrade to version V4.2.6 or V4.4.1 or newer.
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