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CVE-2026-99140: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: tracing: Fix hist trigger timestamps for buffered events Syzkaller triggered a WARN_ON_ONCE(!nest) warning: WARNING: kernel/trace/ring_buffer.c:821 at ring_buffer_event_time_stamp Call trace: ring_buffer_event_time_stamp hist_field_timestamp hist_fn_call event_hist_trigger event_triggers_call __event_trigger_test_discard trace_event_buffer_commit do_trace_event_raw_event_sched_switch trace_event_raw_event_sched_switch The warning is probabilistically reproducible and is related to syzkaller executing the following commands: echo 'prev_pid == 999999' > events/sched/sched_switch/filter echo 'hist:keys=common_timestamp' > events/sched/sched_switch/trigger The specific triggering process is as follows: CPU 0 CPU 1 (context switching) (echo 'hist:keys=common_timestamp' > \ events/sched/sched_switch/trigger) do_trace_event_raw_event_##call trace_event_buffer_lock_reserve if (!tr->no_filter_buffering_ref && trace_file->flags & EVENT_FILE_FL_FILTERED) return entry; // return directly event_hist_trigger_parse hist_register_trigger tracing_set_filter_buffering(file->tr, true); tr->no_filter_buffering_ref++; __trace_buffer_lock_reserve rb_start_commit local_inc(&cpu_buffer->committing); // skipped and not executed trace_event_buffer_commit __event_trigger_test_discard event_triggers_call event_hist_trigger hist_fn_call hist_field_timestamp ring_buffer_event_time_stamp nest = local_read(&cpu_buffer->committing);

    Засегнати продукти

    • Linux Linux: b94bc80df64823e676b506f8de7dcf6a688d681e преди b3a94a79047d3fc9385b3709cb2b86f4a26ed0c3; b94bc80df64823e676b506f8de7dcf6a688d681e преди 71c5c7420478d94d6eb0b427f66fa41bbda651e3; b94bc80df64823e676b506f8de7dcf6a688d681e преди ab320f6aa3769480f735ed0ad026c4a61799b7bc; b94bc80df64823e676b506f8de7dcf6a688d681e преди af192a356e9830a0df231b590ad6fb1fc28c9315; b94bc80df64823e676b506f8de7dcf6a688d681e преди 09c7cce2e59e6b3b1807520bcb1980c561f15d1e; b94bc80df64823e676b506f8de7dcf6a688d681e преди 89e90b16aadd6e66bd0323bc8dfc76a62e756b57; b94bc80df64823e676b506f8de7dcf6a688d681e преди 9414ca3b99e5a7f1f3bf51c2a01b383e1b355dd0
    • Linux Linux: 5.13; преди 5.13; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.161 до 6.6.*; 6.12.115 до 6.12.*; 6.18.59 до 6.18.*; 7.2.13 до 7.2.*; от 7.3 нататък

    История

    • 28 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-99140: Linux | freedomonline.bg