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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 - Double free corruption in libnftables"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1772">1772</a>
</td>
</tr>
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<th>Summary</th>
<td>Double free corruption in libnftables
</td>
</tr>
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<th>Product</th>
<td>nftables
</td>
</tr>
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<th>Version</th>
<td>1.0.x
</td>
</tr>
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<th>Hardware</th>
<td>x86_64
</td>
</tr>
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<th>OS</th>
<td>Ubuntu
</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>
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<th>Component</th>
<td>nft
</td>
</tr>
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<th>Assignee</th>
<td>pablo@netfilter.org
</td>
</tr>
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<th>Reporter</th>
<td>nellexplorer@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>When calling nft_ctx_clear_vars() and then nft_ctx_free() functions
sequentially, double free corruption occurs.
This is due to the fact that after calling xfree(ctx->vars) in the
nft_ctx_clear_vars function, dereferencing the pointer does not occur.
Steps to reproduce:
1. Call nft_ctx_clear_vars();
2. Call nft_ctx_free().</pre>
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