CVE-2026-64275

CVE CVE-2026-64275EUVD EUVD-2026-48987Published 2026-07-25T08:49:20.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux patch: 6.6.145; patch: 5.10.261; 6696777c6506fa52b2a0282121195843ed855be6 <59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d; patch: 6.1.178; patch: 6.18.39; 6696777c6506fa52b2a0282121195843ed855be6 <f6d10af2036d1d4a847a74fe47ebbf93bce3c84c; 6696777c6506fa52b2a0282121195843ed855be6 <6bac57d8fe2a077b8a85b4140eeb7999078158eb; 6696777c6506fa52b2a0282121195843ed855be6 <2f281ff0163a38fdc4cb4061f0c241e643283a5e; 6696777c6506fa52b2a0282121195843ed855be6 <8c1db3418a419e788691746b9c47f863c2fd4890; patch: 7.2-rc1; patch: 5.15.212; patch: 6.12.96; 6696777c6506fa52b2a0282121195843ed855be6 <df2b818fa009c10ff6ba875a1663ff001cda9558; 3.19; 6696777c6506fa52b2a0282121195843ed855be6 <01e0317c256c560d8dcce2e9825eb6142ee34611; 6696777c6506fa52b2a0282121195843ed855be6 <feb4866a42ec94764c7eb58012256f6f37664727; patch: 7.1.4; patch: 0

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

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