Description
A use-after-free vulnerability exists in the coap_delete_pdu_lkd function within coap_pdu.c of the libcoap library. This issue occurs due to improper handling of memory after the freeing of a PDU object, leading to potential memory corruption or the possibility of executing arbitrary code. NOTE: this is disputed by the Supplier because it only occurs when an application uses libcoap incorrectly.
References
github.com/...TCrowd/blog/blob/main/libcoap-vulnerability.md
github.com/IreneTheITCrowd/blog/issues/1
github.com/obgm/libcoap/issues/1724
github.com/obgm/libcoap/issues/1724
