PT-2026-94734 · Linux · Linux Kernel
CVE-2026-90386
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Published
2026-09-17
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Updated
2026-09-28
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 7.0.11-200.fc44.x86 64
Description
A shift-out-of-bounds issue exists in the i3c dw driver. When the ENTDAA process assigns no devices on an empty bus, the
cmd->rx len variable equals master->maxdevs. This causes the GENMASK() index to become -1, leading to a shift exponent of 64, which is too large for a 64-bit long unsigned int type. This condition triggers UBSAN (Undefined Behavior Sanitizer), a tool used to detect undefined behavior in C/C++ programs.Recommendations
Update to Linux kernel version 7.0.11-200.fc44.x86 64 or later.
Exploit
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Related Identifiers
Affected Products
Linux Kernel