In the Linux kernel, the following vulnerability has been resolved:
i2c: davinci: fix division by zero on missing clock-frequency
When the 'clock-frequency' property is missing from the device tree, the driver falls back to DAVINCI_I2C_DEFAULT_BUS_FREQ. However, this macro was defined in kHz (100), whereas the device tree property is expected in Hz.
The probe function divided the fallback value by 1000, causing integer truncation that resulted in dev->bus_freq = 0. This triggered a deterministic division-by-zero kernel panic when calculating clock dividers later in the probe sequence.
Fix this by redefining DAVINCI_I2C_DEFAULT_BUS_FREQ in Hz (100000) to match the expected device tree property unit, allowing the existing division logic to work correctly for both cases.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-awsUpgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-raspiUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-gcpUpgrade linux-image-aws-64kUpgrade linux-image-gcp-64kUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-raspi-7.0Upgrade linux-image-nvidiaUpgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-nvidia-bosUpgrade linux-image-nvidia-7.0Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-1009-awsUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-aws-7.0 | Jul 28, 2026 | Jul 28, 2026 |
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