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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 17:29:35 +0000</lastBuildDate>
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      <title>CVE-2026-93236 — media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-93236</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;media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common&lt;/p&gt;
&lt;p&gt;When VIDIOC_TRY_FMT is called with an unsupported pixel format on the
OUTPUT queue, vdec_try_fmt_common() falls back to V4L2_PIX_FMT_MPEG2.
However, if a distro has locally patched MPEG2 support out (as it has
been broken for some time) the platform format table does not contain
MPEG2 so find_format() returns NULL and the subsequent dereference of
fmt_out-&amp;gt;max_width triggers a NULL pointer dereference.&lt;/p&gt;
&lt;p&gt;Fix this by falling back to the first format in the platform&amp;#39;s format
array instead of hardcoding V4L2_PIX_FMT_MPEG2. This is always valid
since every platform defines at least one format.&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;media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common&lt;/p&gt;
&lt;p&gt;When VIDIOC_TRY_FMT is called with an unsupported pixel format on the
OUTPUT queue, vdec_try_fmt_common() falls back to V4L2_PIX_FMT_MPEG2.
However, if a distro has locally patched MPEG2 support out (as it has
been broken for some time) the platform format table does not contain
MPEG2 so find_format() returns NULL and the subsequent dereference of
fmt_out-&amp;gt;max_width triggers a NULL pointer dereference.&lt;/p&gt;
&lt;p&gt;Fix this by falling back to the first format in the platform&amp;#39;s format
array instead of hardcoding V4L2_PIX_FMT_MPEG2. This is always valid
since every platform defines at least one format.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-93236</guid>
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