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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 16:40:11 +0000</lastBuildDate>
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      <title>CVE-2026-80576 — drm/amdgpu: reject oversized IBs with per-ring packet limits</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-80576</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/amdgpu: reject oversized IBs with per-ring packet limits&lt;/p&gt;
&lt;p&gt;On GFX rings, amdgpu_cs_p2_ib() passed user-supplied ib_bytes through
to ib-&amp;gt;length_dw without a limit, while ring_emit_ib() encodes length
into packet fields. Oversized values can corrupt adjacent control bits
and destabilize command submission.&lt;/p&gt;
&lt;p&gt;Add a per-ring IB packet size limit helper and reject command
submissions exceeding the corresponding dword limit before IB
allocation. Use the documented 20-bit limit for GFX/compute/SDMA/VPE,
and apply the MM fallback limit for other ring types.&lt;/p&gt;
&lt;p&gt;(cherry picked from commit 7f48fa2cf62e3fa6c9c3870aa74988f773247e52)&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/amdgpu: reject oversized IBs with per-ring packet limits&lt;/p&gt;
&lt;p&gt;On GFX rings, amdgpu_cs_p2_ib() passed user-supplied ib_bytes through
to ib-&amp;gt;length_dw without a limit, while ring_emit_ib() encodes length
into packet fields. Oversized values can corrupt adjacent control bits
and destabilize command submission.&lt;/p&gt;
&lt;p&gt;Add a per-ring IB packet size limit helper and reject command
submissions exceeding the corresponding dword limit before IB
allocation. Use the documented 20-bit limit for GFX/compute/SDMA/VPE,
and apply the MM fallback limit for other ring types.&lt;/p&gt;
&lt;p&gt;(cherry picked from commit 7f48fa2cf62e3fa6c9c3870aa74988f773247e52)&lt;/p&gt;</content:encoded>
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