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    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Sun, 04 Oct 2026 12:37:38 +0000</lastBuildDate>
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      <title>CVE-2024-53091 — bpf: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2024-53091</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: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx&lt;/p&gt;
&lt;p&gt;As the introduction of the support for vsock and unix sockets in sockmap,
tls_sw_has_ctx_tx/rx cannot presume the socket passed in must be IS_ICSK.
vsock and af_unix sockets have vsock_sock and unix_sock instead of
inet_connection_sock. For these sockets, tls_get_ctx may return an invalid
pointer and cause page fault in function tls_sw_ctx_rx.&lt;/p&gt;
&lt;p&gt;BUG: unable to handle page fault for address: 0000000000040030
Workqueue: vsock-loopback vsock_loopback_work
RIP: 0010:sk_psock_strp_data_ready+0x23/0x60
Call Trace:
 ? __die+0x81/0xc3
 ? no_context+0x194/0x350
 ? do_page_fault+0x30/0x110
 ? async_page_fault+0x3e/0x50
 ? sk_psock_strp_data_ready+0x23/0x60
 virtio_transport_recv_pkt+0x750/0x800
 ? update_load_avg+0x7e/0x620
 vsock_loopback_work+0xd0/0x100
 process_one_work+0x1a7/0x360
 worker_thread+0x30/0x390
 ? create_worker+0x1a0/0x1a0
 kthread+0x112/0x130
 ? __kthread_cancel_work+0x40/0x40
 ret_from_fork+0x1f/0x40&lt;/p&gt;
&lt;p&gt;v2:
  - Add IS_ICSK check
v3:
  - Update the commits in Fixes&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: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx&lt;/p&gt;
&lt;p&gt;As the introduction of the support for vsock and unix sockets in sockmap,
tls_sw_has_ctx_tx/rx cannot presume the socket passed in must be IS_ICSK.
vsock and af_unix sockets have vsock_sock and unix_sock instead of
inet_connection_sock. For these sockets, tls_get_ctx may return an invalid
pointer and cause page fault in function tls_sw_ctx_rx.&lt;/p&gt;
&lt;p&gt;BUG: unable to handle page fault for address: 0000000000040030
Workqueue: vsock-loopback vsock_loopback_work
RIP: 0010:sk_psock_strp_data_ready+0x23/0x60
Call Trace:
 ? __die+0x81/0xc3
 ? no_context+0x194/0x350
 ? do_page_fault+0x30/0x110
 ? async_page_fault+0x3e/0x50
 ? sk_psock_strp_data_ready+0x23/0x60
 virtio_transport_recv_pkt+0x750/0x800
 ? update_load_avg+0x7e/0x620
 vsock_loopback_work+0xd0/0x100
 process_one_work+0x1a7/0x360
 worker_thread+0x30/0x390
 ? create_worker+0x1a0/0x1a0
 kthread+0x112/0x130
 ? __kthread_cancel_work+0x40/0x40
 ret_from_fork+0x1f/0x40&lt;/p&gt;
&lt;p&gt;v2:
  - Add IS_ICSK check
v3:
  - Update the commits in Fixes&lt;/p&gt;</content:encoded>
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