CVE-2026-64275: In the Linux kernel, the following vulnerability has been resolved: Input: elan_i2c - prevent division by zero and arithmetic underflow The Elan I2C...

Description

In the Linux kernel, the following vulnerability has been resolved: Input: elan_i2c - prevent division by zero and arithmetic underflow The Elan I2C touchpad driver queries the device for its physical dimensions and trace counts to calculate the device resolution and width. However, if the device firmware or device tree provides invalid zero values for x_traces or y_traces, it results in a fatal division-by-zero exception leading to a kernel panic during device probe. Add checks to ensure these parameters are non-zero before performing the division. If invalid trace values are detected, fall back to a safe default of 1. Additionally, prevent an arithmetic underflow in the touch reporting logic. Previously, if the calculated or fallback width was smaller than ETP_FWIDTH_REDUCE (90), the subtraction would underflow, resulting in a massive unsigned integer being reported to userspace. Clamp the adjusted width to a minimum of 0 to safely handle small physical dimensions and fallback scenarios. Completing the probe with safe fallback values ensures the sysfs nodes are created, keeping the firmware update path intact so a recovery firmware can be flashed to the device.

Metrics

EPSS Probability

0.21%

11.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

Vendor	Product	Versions
Linux	Linux	>= 6696777c6506fa52b2a0282121195843ed855be6, < 59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d; >= 6696777c6506fa52b2a0282121195843ed855be6, < f6d10af2036d1d4a847a74fe47ebbf93bce3c84c; >= 6696777c6506fa52b2a0282121195843ed855be6, < 2f281ff0163a38fdc4cb4061f0c241e643283a5e; >= 6696777c6506fa52b2a0282121195843ed855be6, < 8c1db3418a419e788691746b9c47f863c2fd4890; >= 6696777c6506fa52b2a0282121195843ed855be6, < feb4866a42ec94764c7eb58012256f6f37664727; >= 6696777c6506fa52b2a0282121195843ed855be6, < 01e0317c256c560d8dcce2e9825eb6142ee34611; >= 6696777c6506fa52b2a0282121195843ed855be6, < 6bac57d8fe2a077b8a85b4140eeb7999078158eb; >= 6696777c6506fa52b2a0282121195843ed855be6, < df2b818fa009c10ff6ba875a1663ff001cda9558
Linux	Linux	3.19

References

Timeline

Published: Jul 25, 2026
Last Modified: Jul 30, 2026
Status: Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-64275?

In the Linux kernel, the following vulnerability has been resolved: Input: elan_i2c - prevent division by zero and arithmetic underflow The Elan I2C touchpad driver queries the device for its physical dimensions and trace counts to calculate the device resolution and width. However, if the device firmware or device tree provides invalid zero values for x_traces or y_traces, it results in a fatal division-by-zero exception leading to a kernel panic during device probe. Add checks to ensure these parameters are non-zero before performing the division. If invalid trace values are detected, fall back to a safe default of 1. Additionally, prevent an arithmetic underflow in the touch reporting logic. Previously, if the calculated or fallback width was smaller than ETP_FWIDTH_REDUCE (90), the subtraction would underflow, resulting in a massive unsigned integer being reported to userspace. Clamp the adjusted width to a minimum of 0 to safely handle small physical dimensions and fallback scenarios. Completing the probe with safe fallback values ensures the sysfs nodes are created, keeping the firmware update path intact so a recovery firmware can be flashed to the device.

How severe is CVE-2026-64275?

Severity scoring for CVE-2026-64275 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2026-64275?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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