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CVE-2026-90107: 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: free pending qentry in smc_llc_flow_stop() before memset smc_llc_flow_stop() resets a flow struct with a blind memset: spin_lock_bh(&lgr->llc_flow_lock); memset(flow, 0, sizeof(*flow)); flow->type = SMC_LLC_FLOW_NONE; spin_unlock_bh(&lgr->llc_flow_lock); If flow->qentry is non-NULL at this point the pointer is overwritten without the allocation being freed, leaking one kmalloc object. A late-arriving duplicate CONFIRM_LINK or ADD_LINK_CONT message can set flow->qentry after the legitimate message has been consumed by the waiter via smc_llc_flow_qentry_clr() (which NULLs the pointer but leaves flow->type non-zero) but before the flow completes and smc_llc_flow_stop() runs. In that window the duplicate is stashed into flow->qentry, and then lost when smc_llc_flow_stop() zeros the struct. Call smc_llc_flow_qentry_del() inside the lock before the memset. smc_llc_flow_qentry_del() already checks flow->qentry before freeing, so the normal case where no entry is pending is a no-op.

    Засегнати продукти

    • Linux Linux: 555da9af827d95134656fa459c8f3ece04dd867a преди 8e3deb150a5237b672c4579e69a6deb02027dbed; 555da9af827d95134656fa459c8f3ece04dd867a преди 11bc373ee6630709f0c2da2e7860c23d503c9e9d; 555da9af827d95134656fa459c8f3ece04dd867a преди 032aec7d03c9102616b98fea74f8f7145e7f867c; 555da9af827d95134656fa459c8f3ece04dd867a преди 957dba2b8b5aebfe09caa6a6b22b958079082eab; 555da9af827d95134656fa459c8f3ece04dd867a преди f03aa5d36ae3c4068a1c3885146be99aa7fd9307; 555da9af827d95134656fa459c8f3ece04dd867a преди 0879ea157acc1ac6752f6fcb755d1f91a2359238; 555da9af827d95134656fa459c8f3ece04dd867a преди 5ff429dd6725fa6c1e17a4ed0be8ab675f67a98b; 555da9af827d95134656fa459c8f3ece04dd867a преди 5ee0ceddc7785c6dcf4a8107fef01f0414a354f4
    • Linux Linux: 5.8; преди 5.8; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

    История

    • 17 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-90107: Linux | freedomonline.bg