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      <title>CVE-2024-26632 — block: Fix iterating over an empty bio with bio_for_each_folio_all</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2024-26632</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;block: Fix iterating over an empty bio with bio_for_each_folio_all&lt;/p&gt;
&lt;p&gt;If the bio contains no data, bio_first_folio() calls page_folio() on a
NULL pointer and oopses.  Move the test that we&amp;#39;ve reached the end of
the bio from bio_next_folio() to bio_first_folio().&lt;/p&gt;
&lt;p&gt;[axboe: add unlikely() to error case]&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;block: Fix iterating over an empty bio with bio_for_each_folio_all&lt;/p&gt;
&lt;p&gt;If the bio contains no data, bio_first_folio() calls page_folio() on a
NULL pointer and oopses.  Move the test that we&amp;#39;ve reached the end of
the bio from bio_next_folio() to bio_first_folio().&lt;/p&gt;
&lt;p&gt;[axboe: add unlikely() to error case]&lt;/p&gt;</content:encoded>
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