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    <title>Most recent entries from all</title>
    <link>https://db.gcve.eu</link>
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    <lastBuildDate>Wed, 30 Sep 2026 21:17:30 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-97995 — virtio_console: do not free control-out buffers on remove</title>
      <link>https://db.gcve.eu/vuln/cve-2026-97995</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;virtio_console: do not free control-out buffers on remove&lt;/p&gt;
&lt;p&gt;__send_control_msg() publishes &amp;amp;portdev-&amp;gt;cpkt as the control-out
virtqueue cookie. remove_vqs() walks every virtqueue and passes leftover
cookies to free_buf(), which treats them as struct port_buffer and
reads sgpages.&lt;/p&gt;
&lt;p&gt;If a control message is still on c_ovq when the device is unbound,
free_buf() reads past the ports_device object.&lt;/p&gt;
&lt;p&gt;KASAN reported slab-out-of-bounds in free_buf():&lt;/p&gt;
&lt;p&gt;free_buf
	remove_vqs
	virtcons_remove
	unbind_store&lt;/p&gt;
&lt;p&gt;The object was the ports_device allocated in virtcons_probe().&lt;/p&gt;
&lt;p&gt;Drain c_ovq without freeing. The packet lives in portdev and is released
with it.&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;virtio_console: do not free control-out buffers on remove&lt;/p&gt;
&lt;p&gt;__send_control_msg() publishes &amp;amp;portdev-&amp;gt;cpkt as the control-out
virtqueue cookie. remove_vqs() walks every virtqueue and passes leftover
cookies to free_buf(), which treats them as struct port_buffer and
reads sgpages.&lt;/p&gt;
&lt;p&gt;If a control message is still on c_ovq when the device is unbound,
free_buf() reads past the ports_device object.&lt;/p&gt;
&lt;p&gt;KASAN reported slab-out-of-bounds in free_buf():&lt;/p&gt;
&lt;p&gt;free_buf
	remove_vqs
	virtcons_remove
	unbind_store&lt;/p&gt;
&lt;p&gt;The object was the ports_device allocated in virtcons_probe().&lt;/p&gt;
&lt;p&gt;Drain c_ovq without freeing. The packet lives in portdev and is released
with it.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://db.gcve.eu/vuln/cve-2026-97995</guid>
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