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    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Mon, 28 Sep 2026 10:51:16 +0000</lastBuildDate>
    <item>
      <title>CVE-2023-53441 — bpf: cpumap: Fix memory leak in cpu_map_update_elem</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2023-53441</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: cpumap: Fix memory leak in cpu_map_update_elem&lt;/p&gt;
&lt;p&gt;Syzkaller reported a memory leak as follows:&lt;/p&gt;
&lt;p&gt;BUG: memory leak
unreferenced object 0xff110001198ef748 (size 192):
  comm &amp;#34;syz-executor.3&amp;#34;, pid 17672, jiffies 4298118891 (age 9.906s)
  hex dump (first 32 bytes):
    00 00 00 00 4a 19 00 00 80 ad e3 e4 fe ff c0 00  ....J...........
    00 b2 d3 0c 01 00 11 ff 28 f5 8e 19 01 00 11 ff  ........(.......
  backtrace:
    [&amp;lt;ffffffffadd28087&amp;gt;] __cpu_map_entry_alloc+0xf7/0xb00
    [&amp;lt;ffffffffadd28d8e&amp;gt;] cpu_map_update_elem+0x2fe/0x3d0
    [&amp;lt;ffffffffadc6d0fd&amp;gt;] bpf_map_update_value.isra.0+0x2bd/0x520
    [&amp;lt;ffffffffadc7349b&amp;gt;] map_update_elem+0x4cb/0x720
    [&amp;lt;ffffffffadc7d983&amp;gt;] __se_sys_bpf+0x8c3/0xb90
    [&amp;lt;ffffffffb029cc80&amp;gt;] do_syscall_64+0x30/0x40
    [&amp;lt;ffffffffb0400099&amp;gt;] entry_SYSCALL_64_after_hwframe+0x61/0xc6&lt;/p&gt;
&lt;p&gt;BUG: memory leak
unreferenced object 0xff110001198ef528 (size 192):
  comm &amp;#34;syz-executor.3&amp;#34;, pid 17672, jiffies 4298118891 (age 9.906s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [&amp;lt;ffffffffadd281f0&amp;gt;] __cpu_map_entry_alloc+0x260/0xb00
    [&amp;lt;ffffffffadd28d8e&amp;gt;] cpu_map_update_elem+0x2fe/0x3d0
    [&amp;lt;ffffffffadc6d0fd&amp;gt;] bpf_map_update_value.isra.0+0x2bd/0x520
    [&amp;lt;ffffffffadc7349b&amp;gt;] map_update_elem+0x4cb/0x720
    [&amp;lt;ffffffffadc7d983&amp;gt;] __se_sys_bpf+0x8c3/0xb90
    [&amp;lt;ffffff…&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: cpumap: Fix memory leak in cpu_map_update_elem&lt;/p&gt;
&lt;p&gt;Syzkaller reported a memory leak as follows:&lt;/p&gt;
&lt;p&gt;BUG: memory leak
unreferenced object 0xff110001198ef748 (size 192):
  comm &amp;#34;syz-executor.3&amp;#34;, pid 17672, jiffies 4298118891 (age 9.906s)
  hex dump (first 32 bytes):
    00 00 00 00 4a 19 00 00 80 ad e3 e4 fe ff c0 00  ....J...........
    00 b2 d3 0c 01 00 11 ff 28 f5 8e 19 01 00 11 ff  ........(.......
  backtrace:
    [&amp;lt;ffffffffadd28087&amp;gt;] __cpu_map_entry_alloc+0xf7/0xb00
    [&amp;lt;ffffffffadd28d8e&amp;gt;] cpu_map_update_elem+0x2fe/0x3d0
    [&amp;lt;ffffffffadc6d0fd&amp;gt;] bpf_map_update_value.isra.0+0x2bd/0x520
    [&amp;lt;ffffffffadc7349b&amp;gt;] map_update_elem+0x4cb/0x720
    [&amp;lt;ffffffffadc7d983&amp;gt;] __se_sys_bpf+0x8c3/0xb90
    [&amp;lt;ffffffffb029cc80&amp;gt;] do_syscall_64+0x30/0x40
    [&amp;lt;ffffffffb0400099&amp;gt;] entry_SYSCALL_64_after_hwframe+0x61/0xc6&lt;/p&gt;
&lt;p&gt;BUG: memory leak
unreferenced object 0xff110001198ef528 (size 192):
  comm &amp;#34;syz-executor.3&amp;#34;, pid 17672, jiffies 4298118891 (age 9.906s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [&amp;lt;ffffffffadd281f0&amp;gt;] __cpu_map_entry_alloc+0x260/0xb00
    [&amp;lt;ffffffffadd28d8e&amp;gt;] cpu_map_update_elem+0x2fe/0x3d0
    [&amp;lt;ffffffffadc6d0fd&amp;gt;] bpf_map_update_value.isra.0+0x2bd/0x520
    [&amp;lt;ffffffffadc7349b&amp;gt;] map_update_elem+0x4cb/0x720
    [&amp;lt;ffffffffadc7d983&amp;gt;] __se_sys_bpf+0x8c3/0xb90
    [&amp;lt;ffffff…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2023-53441</guid>
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