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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 17:32:02 +0000</lastBuildDate>
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      <title>CVE-2026-90177 — bpf: Check pointer type for all atomic RMW paths</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-90177</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;bpf: Check pointer type for all atomic RMW paths&lt;/p&gt;
&lt;p&gt;Atomic RMW verification records an instruction pointer type only when the
current destination is PTR_TO_ARENA. A second path can therefore reach the
same instruction with an ordinary pointer without comparing it against the
saved arena type.&lt;/p&gt;
&lt;p&gt;The post-verification fixup uses the saved type to rewrite the instruction
to BPF_PROBE_ATOMIC for every path. Record the actual destination type for
all atomic RMW paths so the existing mismatch check rejects incompatible
uses of one instruction.&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;bpf: Check pointer type for all atomic RMW paths&lt;/p&gt;
&lt;p&gt;Atomic RMW verification records an instruction pointer type only when the
current destination is PTR_TO_ARENA. A second path can therefore reach the
same instruction with an ordinary pointer without comparing it against the
saved arena type.&lt;/p&gt;
&lt;p&gt;The post-verification fixup uses the saved type to rewrite the instruction
to BPF_PROBE_ATOMIC for every path. Record the actual destination type for
all atomic RMW paths so the existing mismatch check rejects incompatible
uses of one instruction.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-90177</guid>
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