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CVE-2026-80984: 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: do not dereference an unset send buffer on the SMC-D teardown path smc_close_stream_wait() calls smc_tx_prepared_sends() from inside its sk_wait_event() condition, and sk_wait_event() evaluates that condition once with the socket lock released. smcd_buf_detach() clears conn->sndbuf_desc from smc_conn_kill() under lock_sock(), so a link group terminating while a socket waits there leaves the helper dereferencing NULL, faulting out of close(). SIOCOUTQ reads the field by hand, and smc_close_cancel_work() drops the lock across two cancel_*_sync() calls. Sample the pointer once in the helper, report nothing prepared while it is unset, and bound the ioctl the same way. The receive tasklet dereferences the field directly in smc_cdc_msg_recv_action(), not through this helper; 1/2 is what keeps it from running that late.

    Засегнати продукти

    • Linux Linux: 21f6f41e82e59740e26e06e77bdf58dc7f6f08dd преди ab26e12dd5d2f43d939fcf456933a816e81d2e51; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa преди e3fcff8d22a6c9540748846cd800443a643553a6; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa преди f950e1b1f0aad334f9a9ee552c4dd5b794ebdd45; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa преди f517cf02033801a28f98d86ca613a3533cf066b3; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa преди b395dd319cea422239cb45b998fb38d7e373af87; 6.6.66 преди 6.6.157
    • Linux Linux: 6.10; преди 6.10; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

    История

    • 11 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-80984: Linux | freedomonline.bg