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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 07:37:06 +0000</lastBuildDate>
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      <title>CVE-2026-43090 — xfrm: fix refcount leak in xfrm_migrate_policy_find</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-43090</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;xfrm: fix refcount leak in xfrm_migrate_policy_find&lt;/p&gt;
&lt;p&gt;syzkaller reported a memory leak in xfrm_policy_alloc:&lt;/p&gt;
&lt;p&gt;BUG: memory leak
  unreferenced object 0xffff888114d79000 (size 1024):
    comm &amp;#34;syz.1.17&amp;#34;, pid 931
    ...
    xfrm_policy_alloc+0xb3/0x4b0 net/xfrm/xfrm_policy.c:432&lt;/p&gt;
&lt;p&gt;The root cause is a double call to xfrm_pol_hold_rcu() in
xfrm_migrate_policy_find(). The lookup function already returns
a policy with held reference, making the second call redundant.&lt;/p&gt;
&lt;p&gt;Remove the redundant xfrm_pol_hold_rcu() call to fix the refcount
imbalance and prevent the memory leak.&lt;/p&gt;
&lt;p&gt;Found by Linux Verification Center (linuxtesting.org) with Syzkaller.&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;xfrm: fix refcount leak in xfrm_migrate_policy_find&lt;/p&gt;
&lt;p&gt;syzkaller reported a memory leak in xfrm_policy_alloc:&lt;/p&gt;
&lt;p&gt;BUG: memory leak
  unreferenced object 0xffff888114d79000 (size 1024):
    comm &amp;#34;syz.1.17&amp;#34;, pid 931
    ...
    xfrm_policy_alloc+0xb3/0x4b0 net/xfrm/xfrm_policy.c:432&lt;/p&gt;
&lt;p&gt;The root cause is a double call to xfrm_pol_hold_rcu() in
xfrm_migrate_policy_find(). The lookup function already returns
a policy with held reference, making the second call redundant.&lt;/p&gt;
&lt;p&gt;Remove the redundant xfrm_pol_hold_rcu() call to fix the refcount
imbalance and prevent the memory leak.&lt;/p&gt;
&lt;p&gt;Found by Linux Verification Center (linuxtesting.org) with Syzkaller.&lt;/p&gt;</content:encoded>
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