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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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      <title>CVE-2025-37879 — 9p/net: fix improper handling of bogus negative read/write replies</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-37879</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;9p/net: fix improper handling of bogus negative read/write replies&lt;/p&gt;
&lt;p&gt;In p9_client_write() and p9_client_read_once(), if the server
incorrectly replies with success but a negative write/read count then we
would consider written (negative) &amp;lt;= rsize (positive) because both
variables were signed.&lt;/p&gt;
&lt;p&gt;Make variables unsigned to avoid this problem.&lt;/p&gt;
&lt;p&gt;The reproducer linked below now fails with the following error instead
of a null pointer deref:
9pnet: bogus RWRITE count (4294967295 &amp;gt; 3)&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;9p/net: fix improper handling of bogus negative read/write replies&lt;/p&gt;
&lt;p&gt;In p9_client_write() and p9_client_read_once(), if the server
incorrectly replies with success but a negative write/read count then we
would consider written (negative) &amp;lt;= rsize (positive) because both
variables were signed.&lt;/p&gt;
&lt;p&gt;Make variables unsigned to avoid this problem.&lt;/p&gt;
&lt;p&gt;The reproducer linked below now fails with the following error instead
of a null pointer deref:
9pnet: bogus RWRITE count (4294967295 &amp;gt; 3)&lt;/p&gt;</content:encoded>
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