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CVE-2026-90226: 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: nfc: llcp: avoid userspace overflow on invalid optlen nfc_llcp_getsockopt() casts optval to (u32 __user *) for put_user(), so the kernel always stores 4 bytes regardless of the caller-supplied optlen. The existing min_t(u32, len, sizeof(u32)) only clamps the length reported back to userspace; it does not constrain the store. A call with optlen < 4 therefore writes past the user buffer, violating the getsockopt(2) contract for all five supported optnames. Reject any call with optlen < sizeof(u32) up front. 'len' is int, so a plain size comparison would promote a negative optlen to size_t and slip past the check; an explicit 'len < 0' test is added first to catch negative values before the size compare.

    Засегнати продукти

    • Linux Linux: 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 преди 42859562b7cc4313a84a584f338118edb7087066; 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 преди 598dcd53c52f8eeb9dd5382198c03960d5d40fcd; 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 преди 7e40f2f5e7bc06c3ddef781180ce4f7994176547; 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 преди 35573c6cb081af2f4a7caeea291302aca5484526; 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 преди b4c5abaea06292e1dddb70eac1b51589b32c77a3; 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 преди 8bf228fa02b1ed8ce622fb81fa8edc42be9aeb67; 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 преди bd6f1277b62bc1df348ca21739df2bc546fcd493; 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 преди 99985bfa8336fadcc69190ba2dcbd5386af3d661
    • Linux Linux: 3.10; преди 3.10; 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-2026-90226: Linux | freedomonline.bg