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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
    <description>Contains only the most 10 recent entries.</description>
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    <lastBuildDate>Sun, 04 Oct 2026 14:18:39 +0000</lastBuildDate>
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      <title>CVE-2024-44968 — tick/broadcast: Move per CPU pointer access into the atomic section</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2024-44968</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;tick/broadcast: Move per CPU pointer access into the atomic section&lt;/p&gt;
&lt;p&gt;The recent fix for making the take over of the broadcast timer more
reliable retrieves a per CPU pointer in preemptible context.&lt;/p&gt;
&lt;p&gt;This went unnoticed as compilers hoist the access into the non-preemptible
region where the pointer is actually used. But of course it&amp;#39;s valid that
the compiler keeps it at the place where the code puts it which rightfully
triggers:&lt;/p&gt;
&lt;p&gt;BUG: using smp_processor_id() in preemptible [00000000] code:
       caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0&lt;/p&gt;
&lt;p&gt;Move it to the actual usage site which is in a non-preemptible region.&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;tick/broadcast: Move per CPU pointer access into the atomic section&lt;/p&gt;
&lt;p&gt;The recent fix for making the take over of the broadcast timer more
reliable retrieves a per CPU pointer in preemptible context.&lt;/p&gt;
&lt;p&gt;This went unnoticed as compilers hoist the access into the non-preemptible
region where the pointer is actually used. But of course it&amp;#39;s valid that
the compiler keeps it at the place where the code puts it which rightfully
triggers:&lt;/p&gt;
&lt;p&gt;BUG: using smp_processor_id() in preemptible [00000000] code:
       caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0&lt;/p&gt;
&lt;p&gt;Move it to the actual usage site which is in a non-preemptible region.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2024-44968</guid>
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