CVE-2026-90112
Low risk· EPSS 10%Exploitation Probability (EPSS)
Low risk10th percentile - higher than 10% of all known CVEs
Summary
In the Linux kernel qlcnic driver, the unified ROM parser reads directory, product, and data-descriptor fields from the firmware file. Existing validation ends with unchecked additions and multiplications, and malformed values can wrap before comparison with the firmware size. The parser can also read beyond the firmware allocation during validation or loading.
Risk Assessment
This can lead to an out-of-bounds read and potential kernel crash or data disclosure. It requires supplying a crafted firmware file.
Recommendation
Update the Linux kernel to a version with the fix. Load only firmware from trusted sources and verify its integrity.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: net: qlcnic: validate unified ROM sections before loading The unified ROM parser reads directory, product, and data-descriptor fields from the firmware file. Existing validation forms table and data ends with unchecked additions and multiplications. Malformed values can wrap before they are compared with the firmware size. The parser also dereferences typed pointers at firmware-controlled offsets. Valid descriptor extents alone are insufficient for the consumers. The loader reads a fixed-size bootloader regardless of its declared size, the version parser assumes a 17-byte tail, and a partial final firmware word is read as a full u64. A truncated image can therefore make the driver read beyond the firmware allocation during validation or loading. Replace the pointer-returning parser with bounded range helpers. Validate table entry sizes, descriptor indices, section ranges, the fixed bootloader load length, and the version tail before exposing any section. Read all file fields with unaligned little-endian accessors and assemble a partial final word from only the bytes that remain. Apply the same range checks to the legacy image before reading its fixed fields.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

