Към съдържанието
Търсене

CVE-2026-45918: Linux

Няма оценка

CVSS

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: ovpn: tcp - don't deref NULL sk_socket member after tcp_close() When deleting a peer in case of keepalive expiration, the peer is removed from the OpenVPN hashtable and is temporary inserted in a "release list" for further processing. This happens in: ovpn_peer_keepalive_work() unlock_ovpn(release_list) This processing includes detaching from the socket being used to talk to this peer, by restoring its original proto and socket ops/callbacks. In case of TCP it may happen that, while the peer is sitting in the release list, userspace decides to close the socket. This will result in a concurrent execution of: tcp_close(sk) __tcp_close(sk) sock_orphan(sk) sk_set_socket(sk, NULL) The last function call will set sk->sk_socket to NULL. When the releasing routine is resumed, ovpn_tcp_socket_detach() will attempt to dereference sk->sk_socket to restore its original ops member. This operation will crash due to sk->sk_socket being NULL. Fix this race condition by testing-and-accessing sk->sk_socket atomically under sk->sk_callback_lock.

    Засегнати продукти

    • Linux Linux: 11851cbd60ea1e5abbd97619d69845ead99303d6 преди f998b2c4bec487063a586695159f9a1856e81c56; 11851cbd60ea1e5abbd97619d69845ead99303d6 преди b9142cf4e066c825ec68752a7dcaceda700bbe26; 11851cbd60ea1e5abbd97619d69845ead99303d6 преди 94560267d6c41b1ff3fafbab726e3f8a55a6af34
    • Linux Linux: 6.16; преди 6.16; 6.18.14 до 6.18.*; 6.19.4 до 6.19.*; от 7.0 нататък

    История

    • 27 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-45918: Linux | freedomonline.bg