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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Wed, 30 Sep 2026 07:52:03 +0000</lastBuildDate>
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      <title>CVE-2026-90296 — cpufreq: imx6q: fix devres accumulation across driver rebind</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-90296</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;cpufreq: imx6q: fix devres accumulation across driver rebind&lt;/p&gt;
&lt;p&gt;imx6_soc_volt is allocated with devm_kcalloc(cpu_dev, ...), where cpu_dev
is the CPU device from get_cpu_device(0). That device is never unbound, so
its devres list is never released, and imx6q_cpufreq_remove() does not free
the array either. Every probe therefore adds an allocation that stays for
the lifetime of the system.&lt;/p&gt;
&lt;p&gt;Allocate against the platform device instead. Its devres is released when
the driver is unbound, which is exactly the lifetime the array wants:
imx6q_set_target() reads it, and nothing may reach that after
cpufreq_unregister_driver().&lt;/p&gt;
&lt;p&gt;That makes the array actually go away on unbind, so also clear the
file-scope pointer in remove and on the failed-probe path, rather than
leave it pointing at memory devres is about to release.&lt;/p&gt;
&lt;p&gt;Tested by rebinding the driver on qemu&amp;#39;s mcimx6ul-evk.&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;cpufreq: imx6q: fix devres accumulation across driver rebind&lt;/p&gt;
&lt;p&gt;imx6_soc_volt is allocated with devm_kcalloc(cpu_dev, ...), where cpu_dev
is the CPU device from get_cpu_device(0). That device is never unbound, so
its devres list is never released, and imx6q_cpufreq_remove() does not free
the array either. Every probe therefore adds an allocation that stays for
the lifetime of the system.&lt;/p&gt;
&lt;p&gt;Allocate against the platform device instead. Its devres is released when
the driver is unbound, which is exactly the lifetime the array wants:
imx6q_set_target() reads it, and nothing may reach that after
cpufreq_unregister_driver().&lt;/p&gt;
&lt;p&gt;That makes the array actually go away on unbind, so also clear the
file-scope pointer in remove and on the failed-probe path, rather than
leave it pointing at memory devres is about to release.&lt;/p&gt;
&lt;p&gt;Tested by rebinding the driver on qemu&amp;#39;s mcimx6ul-evk.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-90296</guid>
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