CVE-2026-89728Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's I3C Renesas driver. When the I3C bus is empty and software initiates Dynamic Address Assignment (DAA), an out-of-bounds access can occur. This is due to an incorrect calculation of the newly discovere…
▾ 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 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 4.7
none → medium
— → 4.7
none → medium
Last analysed / modified upstream
— → 5.5
none → medium
A flaw was found in the Linux kernel's I3C Renesas driver. When the I3C bus is empty and software initiates Dynamic Address Assignment (DAA), an out-of-bounds access can occur. This is due to an incorrect calculation of the newly discovered devices bitmask, which can lead to system instability or other undefined behavior.
kernel: i3c: renesas: Fix out-of-bounds access for newdevs mask — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-15.
Affected:
No fix planned:
Fix deferred
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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