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<base href="https://bugzilla.netfilter.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Buggy parsing of malformed rule within implicit chain causes assertion and core dump"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1485">1485</a>
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<th>Summary</th>
<td>Buggy parsing of malformed rule within implicit chain causes assertion and core dump
</td>
</tr>
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<th>Product</th>
<td>nftables
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P5
</td>
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<th>Component</th>
<td>nft
</td>
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<th>Assignee</th>
<td>pablo@netfilter.org
</td>
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<th>Reporter</th>
<td>kfm@plushkava.net
</td>
</tr></table>
<p>
<div>
<pre>For example:-
# nft add table ip t
# nft add chain ip t c
# nft add rule ip t c tcp dport 80 jump { ip saddr 127.0.0.1 daddr 127.0.0.1 }
nft: parser_bison.y:75: close_scope: Assertion `state->scope > 0' failed.
Aborted (core dumped)
Eschewing the use of the implicit chain results in a proper error message:-
# nft add rule ip t c tcp dport 80 ip saddr 127.0.0.1 daddr 127.0.0.1
Error: syntax error, unexpected daddr, expecting end of file or newline or
semicolon
add rule ip t c tcp dport 80 ip saddr 127.0.0.1 daddr 127.0.0.1</pre>
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</p>
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