| 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 ICMP and ICMPv6 echo reply handlers in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network user to cause a denial of service (device crash) when outgoing ping support is enabled, because header sizes are subtracted from a packet length field without validating the field is large enough, resulting in a heap out-of-bounds read of up to approximately 65KB. To mitigate this issue, users should upgrade to the fixed version when available.
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