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CVE-2026-80848: Linux

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: xfrm: espintcp: fix UAF during close ZDI reported and analyzed a race condition during close for espintcp sockets: espintcp_close() frees emsg->skb via kfree_skb() without holding any socket lock. Concurrently, the xfrm_trans_reinject work queue invokes esp_output_tcp_finish() -> espintcp_push_skb() -> espintcp_push_msgs() -> skb_send_sock_locked(), which reads the same skb as a data source. Fix this by adding a synchronize_rcu() call after resetting sk_prot, since esp_output_tcp_finish() runs under RCU and won't use a socket with sk_prot == &tcp_prot. Simply taking the socket lock in espintcp_close() could lead to leaks, if esp_output_tcp_finish() re-adds an skb in the slot we just freed. After this, the existing barrier() is no longer needed.

    Засегнати продукти

    • Linux Linux: e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 преди 29121c5e6591da527e8e36ddac7120dc527f574d; e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 преди ed5d9102190c45fc70121c036b0626b740040b75; e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 преди 4bc0dfa28dca6fc0084203732695968049c44072; e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 преди ff8dd7a932f34409a56e1b91a1219340f17457e9; e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 преди 4b31a875693c480c611519faca46216514e3e052; e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 преди 24efebecf415ba264adba0f0491cec436463a14f; e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 преди eb3bbf29c723fe75c0eb92be14f0ec92971fe272; e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 преди 54b41ad14da9a981131ab6e4d3f79321a503ea5d; e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 преди deb232e884877bf10b4ce2580909eedec986c284
    • Linux Linux: 5.6; преди 5.6; 5.10.269 до 5.10.*; 5.15.220 до 5.15.*; 6.1.187 до 6.1.*; 6.6.156 до 6.6.*; 6.12.108 до 6.12.*; 6.18.49 до 6.18.*; 7.1.13 до 7.1.*; 7.2.3 до 7.2.*; от 7.3 нататък

    История

    • 4 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-80848: Linux | freedomonline.bg