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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Thu, 01 Oct 2026 14:01:53 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-64490 — ALSA: virtio: Validate control metadata from the device</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-64490</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;ALSA: virtio: Validate control metadata from the device&lt;/p&gt;
&lt;p&gt;virtio-snd control handling trusts the device-provided control type and
value count returned by the device.&lt;/p&gt;
&lt;p&gt;That metadata is then used directly to index g_v2a_type_map[] in
virtsnd_kctl_info(), and to size loops and memcpy() operations in
virtsnd_kctl_get() and virtsnd_kctl_put() against fixed-size
virtio_snd_ctl_value and snd_ctl_elem_value arrays.&lt;/p&gt;
&lt;p&gt;A buggy or malicious device can therefore trigger out-of-bounds access by
advertising an invalid control type or an oversized value count.&lt;/p&gt;
&lt;p&gt;Validate control type and count once in virtsnd_kctl_parse_cfg(), before
querying enumerated items or exposing the control to ALSA.&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;ALSA: virtio: Validate control metadata from the device&lt;/p&gt;
&lt;p&gt;virtio-snd control handling trusts the device-provided control type and
value count returned by the device.&lt;/p&gt;
&lt;p&gt;That metadata is then used directly to index g_v2a_type_map[] in
virtsnd_kctl_info(), and to size loops and memcpy() operations in
virtsnd_kctl_get() and virtsnd_kctl_put() against fixed-size
virtio_snd_ctl_value and snd_ctl_elem_value arrays.&lt;/p&gt;
&lt;p&gt;A buggy or malicious device can therefore trigger out-of-bounds access by
advertising an invalid control type or an oversized value count.&lt;/p&gt;
&lt;p&gt;Validate control type and count once in virtsnd_kctl_parse_cfg(), before
querying enumerated items or exposing the control to ALSA.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-64490</guid>
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