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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Tue, 29 Sep 2026 01:36:58 +0000</lastBuildDate>
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      <title>CVE-2026-31571 — drm/i915: Unlink NV12 planes earlier</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-31571</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;drm/i915: Unlink NV12 planes earlier&lt;/p&gt;
&lt;p&gt;unlink_nv12_plane() will clobber parts of the plane state
potentially already set up by plane_atomic_check(), so we
must make sure not to call the two in the wrong order.
The problem happens when a plane previously selected as
a Y plane is now configured as a normal plane by user space.
plane_atomic_check() will first compute the proper plane
state based on the userspace request, and unlink_nv12_plane()
later clears some of the state.&lt;/p&gt;
&lt;p&gt;This used to work on account of unlink_nv12_plane() skipping
the state clearing based on the plane visibility. But I removed
that check, thinking it was an impossible situation. Now when
that situation happens unlink_nv12_plane() will just WARN
and proceed to clobber the state.&lt;/p&gt;
&lt;p&gt;Rather than reverting to the old way of doing things, I think
it&amp;#39;s more clear if we unlink the NV12 planes before we even
compute the new plane state.&lt;/p&gt;
&lt;p&gt;(cherry picked from commit 017ecd04985573eeeb0745fa2c23896fb22ee0cc)&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;drm/i915: Unlink NV12 planes earlier&lt;/p&gt;
&lt;p&gt;unlink_nv12_plane() will clobber parts of the plane state
potentially already set up by plane_atomic_check(), so we
must make sure not to call the two in the wrong order.
The problem happens when a plane previously selected as
a Y plane is now configured as a normal plane by user space.
plane_atomic_check() will first compute the proper plane
state based on the userspace request, and unlink_nv12_plane()
later clears some of the state.&lt;/p&gt;
&lt;p&gt;This used to work on account of unlink_nv12_plane() skipping
the state clearing based on the plane visibility. But I removed
that check, thinking it was an impossible situation. Now when
that situation happens unlink_nv12_plane() will just WARN
and proceed to clobber the state.&lt;/p&gt;
&lt;p&gt;Rather than reverting to the old way of doing things, I think
it&amp;#39;s more clear if we unlink the NV12 planes before we even
compute the new plane state.&lt;/p&gt;
&lt;p&gt;(cherry picked from commit 017ecd04985573eeeb0745fa2c23896fb22ee0cc)&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-31571</guid>
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