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    <title>Most recent entries from all</title>
    <link>https://db.gcve.eu</link>
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    <lastBuildDate>Mon, 28 Sep 2026 20:54:21 +0000</lastBuildDate>
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      <title>CVE-2022-21546 — scsi: target: Fix WRITE_SAME No Data Buffer crash</title>
      <link>https://db.gcve.eu/vuln/cve-2022-21546</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;scsi: target: Fix WRITE_SAME No Data Buffer crash&lt;/p&gt;
&lt;p&gt;In newer version of the SBC specs, we have a NDOB bit that indicates there
is no data buffer that gets written out. If this bit is set using commands
like &amp;#34;sg_write_same --ndob&amp;#34; we will crash in target_core_iblock/file&amp;#39;s
execute_write_same handlers when we go to access the se_cmd-&amp;gt;t_data_sg
because its NULL.&lt;/p&gt;
&lt;p&gt;This patch adds a check for the NDOB bit in the common WRITE SAME code
because we don&amp;#39;t support it. And, it adds a check for zero SG elements in
each handler in case the initiator tries to send a normal WRITE SAME with
no data buffer.&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;scsi: target: Fix WRITE_SAME No Data Buffer crash&lt;/p&gt;
&lt;p&gt;In newer version of the SBC specs, we have a NDOB bit that indicates there
is no data buffer that gets written out. If this bit is set using commands
like &amp;#34;sg_write_same --ndob&amp;#34; we will crash in target_core_iblock/file&amp;#39;s
execute_write_same handlers when we go to access the se_cmd-&amp;gt;t_data_sg
because its NULL.&lt;/p&gt;
&lt;p&gt;This patch adds a check for the NDOB bit in the common WRITE SAME code
because we don&amp;#39;t support it. And, it adds a check for zero SG elements in
each handler in case the initiator tries to send a normal WRITE SAME with
no data buffer.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://db.gcve.eu/vuln/cve-2022-21546</guid>
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