CVE-2026-80689Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's mmiotrace component. When the `mmio_trace_array` is not initialized or is disabled, invoking `mmio_trace_rw()` or `mmio_trace_mapping()` can lead to a NULL pointer dereference. This can cause a system…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 14.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
0.2% → 0.2%
Last analysed / modified upstream
— → 5.5
none → medium
A flaw was found in the Linux kernel's mmiotrace component. When the mmio_trace_array is not initialized or is disabled, invoking mmio_trace_rw() or mmio_trace_mapping() can lead to a NULL pointer dereference. This can cause a system crash, resulting in a Denial of Service (DoS).
kernel: tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions — rated Low by Red Hat. Released 2026-08-28, updated 2026-10-17.
Affected:
No fix planned:
Out of support scope
Workarounds / mitigations:
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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