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    <lastBuildDate>Fri, 02 Oct 2026 11:21:30 +0000</lastBuildDate>
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      <title>CVE-2026-49428 — posixshm: system calls can incorrectly free memory of largepage objects</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-49428</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; FreeBSD&lt;/p&gt;
&lt;p&gt;Certain system calls, such open(2) with the O_TRUNC flag set, and fspacectl(2), could incorrectly free memory in largepage objects.  These operations are not permitted on largepage objects, but the implementation did not verify this.&lt;/p&gt;
&lt;p&gt;An unprivileged local user can abuse the bug to access freed kernel memory.  This can be exploited to escalate privileges.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; FreeBSD&lt;/p&gt;
&lt;p&gt;Certain system calls, such open(2) with the O_TRUNC flag set, and fspacectl(2), could incorrectly free memory in largepage objects.  These operations are not permitted on largepage objects, but the implementation did not verify this.&lt;/p&gt;
&lt;p&gt;An unprivileged local user can abuse the bug to access freed kernel memory.  This can be exploited to escalate privileges.&lt;/p&gt;</content:encoded>
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