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    <lastBuildDate>Wed, 30 Sep 2026 13:44:07 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-98082 — btrfs: fix the possible bioc_list memory leak during error</title>
      <link>https://db.gcve.eu/vuln/cve-2026-98082</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;btrfs: fix the possible bioc_list memory leak during error&lt;/p&gt;
&lt;p&gt;There are two possible ways to leak bioc memory on
btrfs_ordered_extent::bioc_list:&lt;/p&gt;
&lt;p&gt;- An error occurred for btrfs_insert_one_raid_extent()
  Then the function btrfs_insert_raid_extent() immediately return
  without freeing any bioc in the bioc_list.&lt;/p&gt;
&lt;p&gt;- An ordered extent hit an IO error
  In that case the ordered extent will have BTRFS_ORDERED_IOERR set, and
  skip the call on btrfs_insert_raid_extent() completely.&lt;/p&gt;
&lt;p&gt;Fix the problem by:&lt;/p&gt;
&lt;p&gt;- Introduce a new helper, btrfs_cleanup_ordered_bioc_list()
  Which will remove all bioc from the bioc_list, and release the bioc.&lt;/p&gt;
&lt;p&gt;- Call the above helper for btrfs_insert_raid_extent()
  So that the cleanup helper is always called no matter what.&lt;/p&gt;
&lt;p&gt;- Call the above helper for btrfs_finish_one_ordered()
  This is called just before the final release on the ordered extent.&lt;/p&gt;
&lt;p&gt;This was reported by Sashiko when reviewing another patch.&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;btrfs: fix the possible bioc_list memory leak during error&lt;/p&gt;
&lt;p&gt;There are two possible ways to leak bioc memory on
btrfs_ordered_extent::bioc_list:&lt;/p&gt;
&lt;p&gt;- An error occurred for btrfs_insert_one_raid_extent()
  Then the function btrfs_insert_raid_extent() immediately return
  without freeing any bioc in the bioc_list.&lt;/p&gt;
&lt;p&gt;- An ordered extent hit an IO error
  In that case the ordered extent will have BTRFS_ORDERED_IOERR set, and
  skip the call on btrfs_insert_raid_extent() completely.&lt;/p&gt;
&lt;p&gt;Fix the problem by:&lt;/p&gt;
&lt;p&gt;- Introduce a new helper, btrfs_cleanup_ordered_bioc_list()
  Which will remove all bioc from the bioc_list, and release the bioc.&lt;/p&gt;
&lt;p&gt;- Call the above helper for btrfs_insert_raid_extent()
  So that the cleanup helper is always called no matter what.&lt;/p&gt;
&lt;p&gt;- Call the above helper for btrfs_finish_one_ordered()
  This is called just before the final release on the ordered extent.&lt;/p&gt;
&lt;p&gt;This was reported by Sashiko when reviewing another patch.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://db.gcve.eu/vuln/cve-2026-98082</guid>
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