Linux

CVE-2026-99140: In the Linux kernel, the following vulnerability has been resolved: tracing: Fix hist trigger timestamps for buffered events Syzkaller triggered a WARN_ON_ONC

CVE-2026-99140 Oct 28, 2026 Source: Vendor

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
tr

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-99140

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