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    <lastBuildDate>Sun, 04 Oct 2026 10:11:34 +0000</lastBuildDate>
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      <title>CVE-2025-40129 — sunrpc: fix null pointer dereference on zero-length checksum</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-40129</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;sunrpc: fix null pointer dereference on zero-length checksum&lt;/p&gt;
&lt;p&gt;In xdr_stream_decode_opaque_auth(), zero-length checksum.len causes
checksum.data to be set to NULL. This triggers a NPD when accessing
checksum.data in gss_krb5_verify_mic_v2(). This patch ensures that
the value of checksum.len is not less than XDR_UNIT.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;sunrpc: fix null pointer dereference on zero-length checksum&lt;/p&gt;
&lt;p&gt;In xdr_stream_decode_opaque_auth(), zero-length checksum.len causes
checksum.data to be set to NULL. This triggers a NPD when accessing
checksum.data in gss_krb5_verify_mic_v2(). This patch ensures that
the value of checksum.len is not less than XDR_UNIT.&lt;/p&gt;</content:encoded>
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