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CVE-2026-98655: 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: perf: Require kernel access for text poke events Perf events with exclude_kernel=1 can be opened without kernel perf access. However, exclude_kernel does not suppress text-poke sideband records. Every PERF_RECORD_TEXT_POKE is marked PERF_RECORD_MISC_KERNEL and contains a raw kernel instruction address. An unprivileged task can therefore open and mmap a task-local software event with text_poke=1. Both opening a count-only tracepoint event and configuring UDP GRO for ESP-in-UDP cause updates to inline static calls; the observer receives the relocated addresses of the modified instructions. For a known kernel image, any such address reveals the runtime kernel text base despite KASLR. Call perf_allow_kernel() whenever attr.text_poke is set, regardless of exclude_kernel. Events that neither monitor kernel execution nor request text-poke records retain their existing permissions.

    Засегнати продукти

    • Linux Linux: e17d43b93e544f5016c0251d2074c15568d5d963 преди 4d8fc6290d14aa9e4c3b620fe3e5dc8ba3bea7e3; e17d43b93e544f5016c0251d2074c15568d5d963 преди c30886396eb1c0e9fdc4296398dea0db0ab37610; e17d43b93e544f5016c0251d2074c15568d5d963 преди 0e26d44b7c64b045adebcf5d614140f811f09752; e17d43b93e544f5016c0251d2074c15568d5d963 преди 8c38cb055f6a9651198780e4e4d5283de4039f79; e17d43b93e544f5016c0251d2074c15568d5d963 преди 8473f44db9f710ea6f8cafb22f2e3ba6cb8ca9a7; e17d43b93e544f5016c0251d2074c15568d5d963 преди e506333d1b9f42f1e402acebf1283af3c44a3809; e17d43b93e544f5016c0251d2074c15568d5d963 преди 677d0b51ac1a0db55d768c4c6399210b3de0795b; e17d43b93e544f5016c0251d2074c15568d5d963 преди 357e8a77a501d96c9517f01f4a211eed5e9c9184
    • Linux Linux: 5.9; преди 5.9; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.56 до 6.18.*; 7.2.10 до 7.2.*; 7.3 до *

    История

    • 18 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98655: Linux | freedomonline.bg