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CVE-2026-74735: Linux

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CVSS

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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: l2tp: fix tunnel and session refcount leak on seq_file release In pppol2tp_proc_open() and l2tp_dfs_seq_open(), iteration state (pd->tunnel and pd->session) is kept in seq_file private data to allow iteration across multiple read() system calls. However, if userspace closes /proc/net/pppol2tp or /sys/kernel/debug/l2tp/tunnels before reading to end-of-file (EOF), any tunnel or session reference stored in pd->tunnel / pd->session is left un-dropped when seq_file private data is freed. Fix this by dropping any remaining pd->tunnel and pd->session references in pppol2tp_proc_release() and l2tp_dfs_seq_release() when closing the file.

    Засегнати продукти

    • Linux Linux: 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 преди c38b723858a51d6ca4e56470b9f1087f23276772; 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 преди bd897e414451fb34dfdf08b31899180e5ab7149b; 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 преди bdf83613781956cc39798ed08321f74ab0467f4d; 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 преди 8c4fde01bcf91f22b9c7ded8c3e14addd7ddd500; 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 преди ebe2774e956482dd3c70b8991f6f7654356339e6; 0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443 преди 9006c116dd111d457bf5d074990210f70a4ad2c8; f6104e9ae04462523c372928b1173766a771ef95; 7f8e401f9e612df2a95c1ef76217c00181389bb5; c712ed63e9b33d9a282fbd92ce25c64918c3129f; 9a8863e8a8def9d88583cd9c60db38a008e6b8cf; 3.16.60 преди 3.17; 4.16.6 преди 4.17
    • Linux Linux: 4.17; преди 4.17; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.111 до 6.12.*; 6.18.53 до 6.18.*; 7.1.10 до 7.1.*; от 7.2 нататък

    История

    • 26 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-74735: Linux | freedomonline.bg