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CVE-2026-98058: 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: bpf: Mark syscall helpers as sleepable bpf_sys_bpf() executes the bpf(2) syscall body, which can take mutexes, allocate with GFP_KERNEL, and wait for an RCU grace period. bpf_sys_close() reaches close_fd() and filp_close(), which can sleep as well. Both helpers are limited to BPF_PROG_TYPE_SYSCALL, whose main program is sleepable. That does not make every callback sleepable: a syscall program can register a bpf_timer callback, and the verifier checks that callback in a non-sleepable context while retaining the syscall helper set. Without .might_sleep on the prototypes, such a callback can invoke bpf_sys_bpf() from hrtimer softirq context and trigger a scheduling-while-atomic failure. bpf_sys_close() is exposed through the same missing context check. Set .might_sleep on both prototypes so the existing helper-context check rejects them from timer callbacks and other atomic regions. Calls from the sleepable main body remain valid.

    Засегнати продукти

    • Linux Linux: 79a7f8bdb159d9914b58740f3d31d602a6e4aca8 преди 9496d857205e60241034b798d7745ff8830ba599; 79a7f8bdb159d9914b58740f3d31d602a6e4aca8 преди d8cfe9f71d302970ae393616960f2b3021d2b3b0; 79a7f8bdb159d9914b58740f3d31d602a6e4aca8 преди 65f636322ac402add6046c68e9ece77b9ffd71c9; 79a7f8bdb159d9914b58740f3d31d602a6e4aca8 преди 3408e98f06ce06ea6a58ca6c39da9c23f0029c06; 79a7f8bdb159d9914b58740f3d31d602a6e4aca8 преди d05524794240b52fdc3b6c1220dd05505715824d
    • Linux Linux: 5.14; преди 5.14; 6.6.160 до 6.6.*; 6.12.114 до 6.12.*; 6.18.57 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 нататък

    История

    • 25 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98058: Linux | freedomonline.bg