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Do not modify cmd pointer if it is already last opcode in the rule.

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MFC after:	1 week
This commit is contained in:
Andrey V. Elsukov 2019-07-12 09:59:21 +00:00
parent 4ee2f4c180
commit 2dab0de635
1 changed files with 1 additions and 1 deletions
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2
sys/netpfil/ipfw/ip_fw_eaction.c
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@ -387,7 +387,7 @@ ipfw_reset_eaction(struct ip_fw_chain *ch, struct ip_fw *rule,
while (l > 0) { while (l > 0) {
cmdlen = F_LEN(cmd); cmdlen = F_LEN(cmd);
l -= cmdlen; l -= cmdlen;
if (cmd->opcode == O_EXTERNAL_ACTION) if (cmd->opcode == O_EXTERNAL_ACTION || l <= 0)
break; break;
cmd += cmdlen; cmd += cmdlen;
} }