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CVE-2026-31400: Linux

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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: sunrpc: fix cache_request leak in cache_release When a reader's file descriptor is closed while in the middle of reading a cache_request (rp->offset != 0), cache_release() decrements the request's readers count but never checks whether it should free the request. In cache_read(), when readers drops to 0 and CACHE_PENDING is clear, the cache_request is removed from the queue and freed along with its buffer and cache_head reference. cache_release() lacks this cleanup. The only other path that frees requests with readers == 0 is cache_dequeue(), but it runs only when CACHE_PENDING transitions from set to clear. If that transition already happened while readers was still non-zero, cache_dequeue() will have skipped the request, and no subsequent call will clean it up. Add the same cleanup logic from cache_read() to cache_release(): after decrementing readers, check if it reached 0 with CACHE_PENDING clear, and if so, dequeue and free the cache_request.

    Засегнати продукти

    • Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 1dfedb293943e491379c9302b428e6f920a73d12; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди f18c1f2a88ca91357916997cdb0f7adaf14fc497; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 7bcd5e318876ac638c8ceade7a648e76ac8c48e1; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 41f6ba6c98a618043d2cd71030bf9a752dfab8b2; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 301670dcd098c1fe5c2fe90fb3c7a8f4814d2351; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди be5c35960e5ead70862736161836e2d1bc7352dc; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 373457de14281c1fc7cace6fc4c8a267fc176673; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 17ad31b3a43b72aec3a3d83605891e1397d0d065
    • Linux Linux: 2.6.12; преди 2.6.12; 5.10.253 до 5.10.*; 5.15.203 до 5.15.*; 6.1.167 до 6.1.*; 6.6.130 до 6.6.*; 6.12.78 до 6.12.*; 6.18.20 до 6.18.*; 6.19.10 до 6.19.*; от 7.0 нататък

    История

    • 3 април 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-31400: Linux | freedomonline.bg