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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Mon, 28 Sep 2026 07:47:08 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-53079 — net_sched: fix skb memory leak in deferred qdisc drops</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-53079</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;net_sched: fix skb memory leak in deferred qdisc drops&lt;/p&gt;
&lt;p&gt;When the network stack cleans up the deferred list via qdisc_run_end(),
it operates on the root qdisc. If the root qdisc do not implement the
TCQ_F_DEQUEUE_DROPS flag the packets queue to free are never freed and
gets stranded on the child&amp;#39;s local to_free list.&lt;/p&gt;
&lt;p&gt;Fix this by making qdisc_dequeue_drop() aware of the root qdisc. It
fetches the root qdisc and check for the TCQ_F_DEQUEUE_DROPS flag. If
the flag is present, the packet is appended directly to the root&amp;#39;s
to_free list. Otherwise, drop it directly as it was done before the
optimization was implemented.&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;net_sched: fix skb memory leak in deferred qdisc drops&lt;/p&gt;
&lt;p&gt;When the network stack cleans up the deferred list via qdisc_run_end(),
it operates on the root qdisc. If the root qdisc do not implement the
TCQ_F_DEQUEUE_DROPS flag the packets queue to free are never freed and
gets stranded on the child&amp;#39;s local to_free list.&lt;/p&gt;
&lt;p&gt;Fix this by making qdisc_dequeue_drop() aware of the root qdisc. It
fetches the root qdisc and check for the TCQ_F_DEQUEUE_DROPS flag. If
the flag is present, the packet is appended directly to the root&amp;#39;s
to_free list. Otherwise, drop it directly as it was done before the
optimization was implemented.&lt;/p&gt;</content:encoded>
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