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CVE-2026-97939: 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: ipmr: account multicast table and route memory A netadmin in a user+net namespace can create many IPv4 and IPv6 multicast routing tables with MRT_TABLE and MRT6_TABLE. Each unseen id allocates an mr_table via the shared mr_table_alloc(), links it into the per-net list, and leaves it until netns teardown. Those objects were not charged to memcg, so the host unreclaimable slab grows with the table count. Account mr_table allocations with GFP_KERNEL_ACCOUNT and mark the IPv4/IPv6 MFC caches SLAB_ACCOUNT. This matches the established handling of IP addresses, routes and alternate interface names. Unresolved MFC entries are still allocated from softIRQ with GFP_ATOMIC and are not charged. They expire after 10 seconds and are bounded by the socket receive queue; see commit 0079ad8e8dc3 ("ipmr: remove hard code cache_resolve_queue_len limit").

    Засегнати продукти

    • Linux Linux: f0ad0860d01e47a3ffd220564c5c653b3afbe962 преди 3e808d8dfebd8f114a747bd90c8f7d2a6fd7474f; f0ad0860d01e47a3ffd220564c5c653b3afbe962 преди 57c523e95ea2608a19e6bfcd664d641ddf7bc4b4; f0ad0860d01e47a3ffd220564c5c653b3afbe962 преди 20424f267c9dbdfcade28b2b2306767a7dfb43d1; f0ad0860d01e47a3ffd220564c5c653b3afbe962 преди 21e0749e8ef272ac7e3eefe0fa488a5983f4b038; f0ad0860d01e47a3ffd220564c5c653b3afbe962 преди ec1c6140394ee87127479bc500a3158b125bf07a; f0ad0860d01e47a3ffd220564c5c653b3afbe962 преди 0264b3ee09b118fec8a5471b4ca288f8ab84722f; f0ad0860d01e47a3ffd220564c5c653b3afbe962 преди d0a2e2a4ee6bfe51e398bfb6921a7d0f4c26bc1c; f0ad0860d01e47a3ffd220564c5c653b3afbe962 преди b7ee18725f2292ab554aa96a101ae42d45f008bd
    • Linux Linux: 2.6.35; преди 2.6.35; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 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.*; 7.3 до *

    История

    • 25 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-97939: Linux | freedomonline.bg