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CVE-2026-97597: 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: ipv6: flowlabel: cap duplicate leases per socket ipv6_flowlabel_get() allocates an ipv6_fl_socklist entry for every successful GET. The recheck path for a compatible existing flowlabel links another lease without applying any lease admission check. Repeated GET requests for one shareable label can therefore grow a socket's lease list without bound. Reject a new unprivileged lease once the socket already holds FL_MAX_PER_SOCK leases. Check this on the shared recheck path so reuse of a globally interned label, including the fl_intern() collision path, is covered as well. New-label admission remains under the existing mem_check() policy. Use capable(CAP_NET_ADMIN) rather than ns_capable(), matching mem_check(). An unprivileged user must not bypass the cap by creating a user namespace and a netns where they have CAP_NET_ADMIN, which would still consume host memory. Check the capability only when the socket reaches the limit, so successful unprivileged GET requests below the cap do not generate a capability audit. Do the admission check before updating linger and expires so a rejected GET does not refresh the shared label, matching the existing socket-list allocation failure path.

    Засегнати продукти

    • Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 42abef116bb2265eeccae55a0dc91a9f1546f74c; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 0159f716d8adbe85951cdf008d0afe27d874eaa6; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 6d917992c22b6029fc2dc1bd464b7f6709357161; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 2f1a6dd5c80ceb902f50449efe899f29cd7918e3; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 467467bf4209f9f8add0c648bae763f92a0224c3; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 8d6cd188508513503805c156165de38e4e4a8615
    • Linux Linux: 2.6.12; преди 2.6.12; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.112 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 нататък

    История

    • 25 септември 2026 Публикувано

    Други уязвимости в Linux Linux

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    CVE-2026-97597: Linux | freedomonline.bg