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gnrc/rpl: fix incorrect addition overflow check #19739

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Jun 17, 2023
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gnrc/rpl: fix incorrect addition overflow check #19739

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2 changes: 1 addition & 1 deletion sys/net/gnrc/routing/rpl/of0.c
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Original file line number Diff line number Diff line change
Expand Up @@ -69,7 +69,7 @@ uint16_t calc_rank(gnrc_rpl_dodag_t *dodag, uint16_t base_rank)
add = CONFIG_GNRC_RPL_DEFAULT_MIN_HOP_RANK_INCREASE;
}

if ((base_rank + add) < base_rank) {
if ((uint16_t)(base_rank + add) < base_rank) {
return GNRC_RPL_INFINITE_RANK;
}

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