5.5
MEDIUM
CVSS 3.1
CVE-2026-64275
Input: elan_i2c - prevent division by zero and arithmetic underflow
Overview
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.
Details
INFO
Published Date :
July 25, 2026, 10:17 a.m.
Last Modified :
Aug. 17, 2026, 5:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
Address division by zero and arithmetic underflow in the Elan I2C touchpad driver.
- Ensure trace parameters are non-zero before division.
- Use a safe default of 1 for invalid trace values.
- Clamp adjusted width to a minimum of 0.
- Update the Linux kernel to the latest version.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64275.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64275 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64275
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64275 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64275 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': 'f6d10af2036d1d4a847a74fe47ebbf93bce3c84c', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '2f281ff0163a38fdc4cb4061f0c241e643283a5e', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '8c1db3418a419e788691746b9c47f863c2fd4890', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': 'feb4866a42ec94764c7eb58012256f6f37664727', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '01e0317c256c560d8dcce2e9825eb6142ee34611', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '6bac57d8fe2a077b8a85b4140eeb7999078158eb', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': 'df2b818fa009c10ff6ba875a1663ff001cda9558', 'versionType': 'git'}], 'programFiles': ['drivers/input/mouse/elan_i2c_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/input/mouse/elan_i2c_core.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': 'f6d10af2036d1d4a847a74fe47ebbf93bce3c84c', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '2f281ff0163a38fdc4cb4061f0c241e643283a5e', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '8c1db3418a419e788691746b9c47f863c2fd4890', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': 'feb4866a42ec94764c7eb58012256f6f37664727', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '01e0317c256c560d8dcce2e9825eb6142ee34611', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '6bac57d8fe2a077b8a85b4140eeb7999078158eb', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': 'df2b818fa009c10ff6ba875a1663ff001cda9558', 'versionType': 'git'}], 'programFiles': ['drivers/input/mouse/elan_i2c_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/input/mouse/elan_i2c_core.c'], 'defaultStatus': 'affected'}] -
Initial Analysis by [email protected]
Aug. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-369 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.212 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.178 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.145 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.96 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.39 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.1.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.19 up to (excluding) 5.10.261 Added Reference Type kernel.org: https://git.kernel.org/stable/c/01e0317c256c560d8dcce2e9825eb6142ee34611 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2f281ff0163a38fdc4cb4061f0c241e643283a5e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6bac57d8fe2a077b8a85b4140eeb7999078158eb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8c1db3418a419e788691746b9c47f863c2fd4890 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/df2b818fa009c10ff6ba875a1663ff001cda9558 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f6d10af2036d1d4a847a74fe47ebbf93bce3c84c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/feb4866a42ec94764c7eb58012256f6f37664727 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 25, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': 'f6d10af2036d1d4a847a74fe47ebbf93bce3c84c', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '2f281ff0163a38fdc4cb4061f0c241e643283a5e', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '8c1db3418a419e788691746b9c47f863c2fd4890', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': 'feb4866a42ec94764c7eb58012256f6f37664727', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '01e0317c256c560d8dcce2e9825eb6142ee34611', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': '6bac57d8fe2a077b8a85b4140eeb7999078158eb', 'versionType': 'git'}, {'status': 'affected', 'version': '6696777c6506fa52b2a0282121195843ed855be6', 'lessThan': 'df2b818fa009c10ff6ba875a1663ff001cda9558', 'versionType': 'git'}], 'programFiles': ['drivers/input/mouse/elan_i2c_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/input/mouse/elan_i2c_core.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/01e0317c256c560d8dcce2e9825eb6142ee34611 Added Reference https://git.kernel.org/stable/c/2f281ff0163a38fdc4cb4061f0c241e643283a5e Added Reference https://git.kernel.org/stable/c/59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d Added Reference https://git.kernel.org/stable/c/6bac57d8fe2a077b8a85b4140eeb7999078158eb Added Reference https://git.kernel.org/stable/c/8c1db3418a419e788691746b9c47f863c2fd4890 Added Reference https://git.kernel.org/stable/c/df2b818fa009c10ff6ba875a1663ff001cda9558 Added Reference https://git.kernel.org/stable/c/f6d10af2036d1d4a847a74fe47ebbf93bce3c84c Added Reference https://git.kernel.org/stable/c/feb4866a42ec94764c7eb58012256f6f37664727
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.