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    <title>Most recent entries from all</title>
    <link>https://db.gcve.eu</link>
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    <lastBuildDate>Wed, 30 Sep 2026 14:34:11 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-98117 — cachefiles: Fix potential UAF/KASAN warning</title>
      <link>https://db.gcve.eu/vuln/cve-2026-98117</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;cachefiles: Fix potential UAF/KASAN warning&lt;/p&gt;
&lt;p&gt;Currently, trace_cachefiles_coherency() is being passed a pointer to a
__be64 lain over the coherency data in struct cachefiles_xattr so that it
can display the first 8 bytes.  However, the data is of variable length and
could even be 0 bytes.  This could lead to a UAF or KASAN warning.&lt;/p&gt;
&lt;p&gt;Fix this by making sure the buffer has room for at least 8 bytes and that
those 8 bytes are pre-cleared.&lt;/p&gt;
&lt;p&gt;Further, those bytes are not 8-byte aligned, so fix the tracepoint to
extract the data as four 2-byte words (they are 2-byte aligned) and
reassemble the __be64.  The compiler will convert this into a single 8-byte
load where the CPU supports it.&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;cachefiles: Fix potential UAF/KASAN warning&lt;/p&gt;
&lt;p&gt;Currently, trace_cachefiles_coherency() is being passed a pointer to a
__be64 lain over the coherency data in struct cachefiles_xattr so that it
can display the first 8 bytes.  However, the data is of variable length and
could even be 0 bytes.  This could lead to a UAF or KASAN warning.&lt;/p&gt;
&lt;p&gt;Fix this by making sure the buffer has room for at least 8 bytes and that
those 8 bytes are pre-cleared.&lt;/p&gt;
&lt;p&gt;Further, those bytes are not 8-byte aligned, so fix the tracepoint to
extract the data as four 2-byte words (they are 2-byte aligned) and
reassemble the __be64.  The compiler will convert this into a single 8-byte
load where the CPU supports it.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://db.gcve.eu/vuln/cve-2026-98117</guid>
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