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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 - iptables-nft-restore --test can segfault"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1391">1391</a>
</td>
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<th>Summary</th>
<td>iptables-nft-restore --test can segfault
</td>
</tr>
<tr>
<th>Product</th>
<td>nftables
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86_64
</td>
</tr>
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<th>OS</th>
<td>Gentoo
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P5
</td>
</tr>
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<th>Component</th>
<td>iptables over nftable
</td>
</tr>
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<th>Assignee</th>
<td>pablo@netfilter.org
</td>
</tr>
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<th>Reporter</th>
<td>kfm@plushkava.net
</td>
</tr></table>
<p>
<div>
<pre>Upon first ever using iptables-nft-restore to test a long-standing production
ruleset, I encountered a segmentation fault. I have been able to reduce it to
this test case:
# printf '%s\nCOMMIT\n' '*nat' '*raw' '*filter' | iptables-nft-restore --test
Omitting the --test option prevents the segfault from occurring.
Currently, I am testing with a Gentoo Linux system that uses the following
components:
Linux 5.4.5
glibc-2.29
iptables-1.8.4
libmnl-1.0.4
libnfnetlink-1.0.1
libnftnl-1.1.5
Some additional details have been shared with Pablo via private correspondence.
I shall post them here, if requested.</pre>
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</p>
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