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Reject binary trace routes that exceed representable hop count

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mikecarper committed 2026-10-16 05:26:29 -07:00
1 parent f65a8269f3
commit ebc103f085
3 files changed
+142 -9
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examples/companion_radio/MyMesh.cpp
+1 -1
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@@ -7037,7 +7037,7 @@ void MyMesh::handleCmdFrame(size_t len) {
uint8_t path_len = len - 10;
uint8_t flags = cmd_frame[9];
uint8_t path_sz = flags & 0x03; // NEW v1.11+
if ((path_len >> path_sz) > MAX_PATH_SIZE || (path_len % (1 << path_sz)) != 0) { // make sure is multiple of path_sz
if ((path_len >> path_sz) >= MAX_PATH_SIZE || (path_len % (1 << path_sz)) != 0) { // make sure is multiple of path_sz
writeErrFrame(ERR_CODE_ILLEGAL_ARG);
} else {
uint32_t tag, auth;