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    <title>Most recent entries from all</title>
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    <lastBuildDate>Mon, 28 Sep 2026 23:15:48 +0000</lastBuildDate>
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      <title>CVE-2024-50145 — octeon_ep: Add SKB allocation failures handling in __octep_oq_process_rx()</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2024-50145</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;octeon_ep: Add SKB allocation failures handling in __octep_oq_process_rx()&lt;/p&gt;
&lt;p&gt;build_skb() returns NULL in case of a memory allocation failure so handle
it inside __octep_oq_process_rx() to avoid NULL pointer dereference.&lt;/p&gt;
&lt;p&gt;__octep_oq_process_rx() is called during NAPI polling by the driver. If
skb allocation fails, keep on pulling packets out of the Rx DMA queue: we
shouldn&amp;#39;t break the polling immediately and thus falsely indicate to the
octep_napi_poll() that the Rx pressure is going down. As there is no
associated skb in this case, don&amp;#39;t process the packets and don&amp;#39;t push them
up the network stack - they are skipped.&lt;/p&gt;
&lt;p&gt;Helper function is implemented to unmmap/flush all the fragment buffers
used by the dropped packet. &amp;#39;alloc_failures&amp;#39; counter is incremented to
mark the skb allocation error in driver statistics.&lt;/p&gt;
&lt;p&gt;Found by Linux Verification Center (linuxtesting.org) with SVACE.&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;octeon_ep: Add SKB allocation failures handling in __octep_oq_process_rx()&lt;/p&gt;
&lt;p&gt;build_skb() returns NULL in case of a memory allocation failure so handle
it inside __octep_oq_process_rx() to avoid NULL pointer dereference.&lt;/p&gt;
&lt;p&gt;__octep_oq_process_rx() is called during NAPI polling by the driver. If
skb allocation fails, keep on pulling packets out of the Rx DMA queue: we
shouldn&amp;#39;t break the polling immediately and thus falsely indicate to the
octep_napi_poll() that the Rx pressure is going down. As there is no
associated skb in this case, don&amp;#39;t process the packets and don&amp;#39;t push them
up the network stack - they are skipped.&lt;/p&gt;
&lt;p&gt;Helper function is implemented to unmmap/flush all the fragment buffers
used by the dropped packet. &amp;#39;alloc_failures&amp;#39; counter is incremented to
mark the skb allocation error in driver statistics.&lt;/p&gt;
&lt;p&gt;Found by Linux Verification Center (linuxtesting.org) with SVACE.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2024-50145</guid>
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