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CVE-2026-53274: 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: net/smc: fix sleep-inside-lock in __smc_setsockopt() causing local DoS A logic flaw in __smc_setsockopt() allows a local unprivileged user to cause a Denial of Service (DoS) by holding the socket lock indefinitely. The function __smc_setsockopt() calls copy_from_sockptr() while holding lock_sock(sk). By passing a userfaultfd-monitored memory page (or FUSE-backed memory on systems where unprivileged userfaultfd is disabled) as the optval, an attacker can halt execution during the copy operation, keeping the lock held. Combined with asynchronous tear-down operations like shutdown(), this exhausts the kernel wq (kworkers) and triggers the hung task watchdog. [ 240.123456] INFO: task kworker/u8:2 blocked for more than 120 seconds. [ 240.123489] Call Trace: [ 240.123501] smc_shutdown+... [ 240.123512] lock_sock_nested+... This patch moves the user-space copy outside the lock_sock() critical section to prevent the issue.

    Засегнати продукти

    • Linux Linux: a6a6fe27bab48f0d09a64b051e7bde432fcae081 преди 35a22117839602bb52283de08894c5a7dde92420; a6a6fe27bab48f0d09a64b051e7bde432fcae081 преди 5d27d2ffe487df89ce28fda0410eafa05dbe03a0; a6a6fe27bab48f0d09a64b051e7bde432fcae081 преди 89f6fbe0033c942cb790ffd53ca93a45eeaf1c91; a6a6fe27bab48f0d09a64b051e7bde432fcae081 преди dcd90f42a33e4220385f27b515183d0c91b2fc4a; a6a6fe27bab48f0d09a64b051e7bde432fcae081 преди 94d286fa5eedc550d42bcb9c85416af8f77736ff; a6a6fe27bab48f0d09a64b051e7bde432fcae081 преди a3fdd924d88c30b9f488636ce0e4696012cf5511
    • Linux Linux: 5.18; преди 5.18; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.94 до 6.12.*; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; от 7.1 нататък

    История

    • 25 юни 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-53274: Linux | freedomonline.bg