Linux Kernel up to 7.1.3 elan_i2c x_traces/y_traces/width divide by zero

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k3.20-

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 7.1.3. This issue affects some unknown processing of the component elan_i2c. Executing a manipulation of the argument x_traces/y_traces/width can lead to divide by zero. This vulnerability appears as CVE-2026-64275. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 7.1.3. This vulnerability affects an unknown function of the component elan_i2c. The manipulation of the argument x_traces/y_traces/width with an unknown input leads to a divide by zero vulnerability. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-64275 since 07/19/2026. The exploitation appears to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available.

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.96, 6.18.39, 7.1.4 or 7.2-rc1 eliminates this vulnerability. Applying the patch 59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d/f6d10af2036d1d4a847a74fe47ebbf93bce3c84c/2f281ff0163a38fdc4cb4061f0c241e643283a5e/8c1db3418a419e788691746b9c47f863c2fd4890/feb4866a42ec94764c7eb58012256f6f37664727/01e0317c256c560d8dcce2e9825eb6142ee34611/6bac57d8fe2a077b8a85b4140eeb7999078158eb/df2b818fa009c10ff6ba875a1663ff001cda9558 is able to eliminate this problem.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Divide by zero
CWE: CWE-369 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.96/6.18.39/7.1.4/7.2-rc1
Patch: 59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d/f6d10af2036d1d4a847a74fe47ebbf93bce3c84c/2f281ff0163a38fdc4cb4061f0c241e643283a5e/8c1db3418a419e788691746b9c47f863c2fd4890/feb4866a42ec94764c7eb58012256f6f37664727/01e0317c256c560d8dcce2e9825eb6142ee34611/6bac57d8fe2a077b8a85b4140eeb7999078158eb/df2b818fa009c10ff6ba875a1663ff001cda9558

Timelineinfo

07/19/2026 CVE reserved
07/25/2026 +6 days Advisory disclosed
07/25/2026 +0 days VulDB entry created
07/25/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-64275 (🔒)
GCVE (CVE): GCVE-0-2026-64275
GCVE (VulDB): GCVE-100-383068

Entryinfo

Created: 07/25/2026 12:52
Changes: 07/25/2026 12:52 (59)
Complete: 🔍
Cache ID: 216::103

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