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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Tue, 29 Sep 2026 15:04:59 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-23404 — apparmor: replace recursive profile removal with iterative approach</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-23404</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;apparmor: replace recursive profile removal with iterative approach&lt;/p&gt;
&lt;p&gt;The profile removal code uses recursion when removing nested profiles,
which can lead to kernel stack exhaustion and system crashes.&lt;/p&gt;
&lt;p&gt;Reproducer:
  $ pf=&amp;#39;a&amp;#39;; for ((i=0; i&amp;lt;1024; i++)); do
      echo -e &amp;#34;profile $pf { \n }&amp;#34; | apparmor_parser -K -a;
      pf=&amp;#34;$pf//x&amp;#34;;
  done
  $ echo -n a &amp;gt; /sys/kernel/security/apparmor/.remove&lt;/p&gt;
&lt;p&gt;Replace the recursive __aa_profile_list_release() approach with an
iterative approach in __remove_profile(). The function repeatedly
finds and removes leaf profiles until the entire subtree is removed,
maintaining the same removal semantic without recursion.&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;apparmor: replace recursive profile removal with iterative approach&lt;/p&gt;
&lt;p&gt;The profile removal code uses recursion when removing nested profiles,
which can lead to kernel stack exhaustion and system crashes.&lt;/p&gt;
&lt;p&gt;Reproducer:
  $ pf=&amp;#39;a&amp;#39;; for ((i=0; i&amp;lt;1024; i++)); do
      echo -e &amp;#34;profile $pf { \n }&amp;#34; | apparmor_parser -K -a;
      pf=&amp;#34;$pf//x&amp;#34;;
  done
  $ echo -n a &amp;gt; /sys/kernel/security/apparmor/.remove&lt;/p&gt;
&lt;p&gt;Replace the recursive __aa_profile_list_release() approach with an
iterative approach in __remove_profile(). The function repeatedly
finds and removes leaf profiles until the entire subtree is removed,
maintaining the same removal semantic without recursion.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-23404</guid>
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