CVE-2026-62381: Heap-based Buffer Overflow

luci-lib-px5g LuCI contains a heap-based buffer overflow in the native ASN.1 encoding routine asn1addobj x509write.c when signing a certificate with a 2040-bit RSA key. For a 255-byte signature, the BIT STRING allocation is computed from the DER length encoding of 255 bytes, but the payload writt...