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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Mon, 05 Oct 2026 20:38:32 +0000</lastBuildDate>
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      <title>CVE-2026-80945 — crypto: iaa - unmap dst before software fallback on decompress</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-80945</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;crypto: iaa - unmap dst before software fallback on decompress&lt;/p&gt;
&lt;p&gt;On a hardware analytics error, decompress retries through the software
fallback, which writes req-&amp;gt;dst with the CPU while it is still mapped
DMA_FROM_DEVICE. With SWIOTLB active the later dma_unmap_sg() copies the
stale bounce buffer over req-&amp;gt;dst, corrupting the result.&lt;/p&gt;
&lt;p&gt;Unmap before the fallback runs. The async path unmaps inline; the sync
path signals the retry with -EAGAIN so iaa_comp_adecompress() runs the
fallback after unmapping.&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;crypto: iaa - unmap dst before software fallback on decompress&lt;/p&gt;
&lt;p&gt;On a hardware analytics error, decompress retries through the software
fallback, which writes req-&amp;gt;dst with the CPU while it is still mapped
DMA_FROM_DEVICE. With SWIOTLB active the later dma_unmap_sg() copies the
stale bounce buffer over req-&amp;gt;dst, corrupting the result.&lt;/p&gt;
&lt;p&gt;Unmap before the fallback runs. The async path unmaps inline; the sync
path signals the retry with -EAGAIN so iaa_comp_adecompress() runs the
fallback after unmapping.&lt;/p&gt;</content:encoded>
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