CVE-2026-80689None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions mmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into tr and pass it to _…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · 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 CVEORG
Last analysed / modified upstream
0.2%
0.2% → 0.2%
In the Linux kernel, the following vulnerability has been resolved:
tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions
mmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into tr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map(). If these functions are invoked while mmio_trace_array is NULL (e.g. before initialization or after disabled), accessing tr->array_buffer.buffer will result in a NULL pointer dereference crash.
Fix this by adding an explicit NULL check for tr at the beginning of __trace_mmiotrace_rw() and __trace_mmiotrace_map().
Linux >= f984b51e0779a6dd30feedc41404013ca54e5d05 < dc1b1a057b3bb901f83433700e604fe0ae67c5f2Linux >= f984b51e0779a6dd30feedc41404013ca54e5d05 < 6aee2d478545c089dd5d055d3c9f0c7ea034fb80Linux >= f984b51e0779a6dd30feedc41404013ca54e5d05 < 4e4ab09db7899d7f2d2293a18adf0fa200a27e73Linux >= f984b51e0779a6dd30feedc41404013ca54e5d05 < 2df964d141270c40f07547b0c2e0a51e2573d46dLinux >= f984b51e0779a6dd30feedc41404013ca54e5d05 < 876014b4eeb927146430e7591cf959a7ceb8d64aLinux >= f984b51e0779a6dd30feedc41404013ca54e5d05 < a20a0010eb6485f60cd64e15ebc85a4bd388642eLinux >= f984b51e0779a6dd30feedc41404013ca54e5d05 < 60234845142fddb27db89ebc00a65178421fb3a4Linux >= f984b51e0779a6dd30feedc41404013ca54e5d05 < 12b80cdbc54cf615b4717a4e8180063408091ea2Linux 2.6.27Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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