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NVD / CVE Program· CNA Linux

CVE-2026-64275: Input: elan_i2c - prevent division by zero and arithmetic underflow

MediumCVSS 5.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 01e0317c256c560d8dcce2e9825eb6142ee34611, 2f281ff0163a38fdc4cb4061f0c241e643283a5e, 59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1.

Low priority for now. Upgrade to Linux Linux 01e0317c256c560d8dcce2e9825eb6142ee34611, 2f281ff0163a38fdc4cb4061f0c241e643283a5e, 59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Jul 25, 2026
Updated
Nov 6, 2026
EPSS
0.1% · 5th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-64275

When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.19affected
    • 6696777c6506fa52b2a0282121195843ed855be6 and later · before 59d4cc5e7a9785e4bdc9c55273274c6b49d4b58daffected · git
    • 6696777c6506fa52b2a0282121195843ed855be6 and later · before f6d10af2036d1d4a847a74fe47ebbf93bce3c84caffected · git
    • 6696777c6506fa52b2a0282121195843ed855be6 and later · before 2f281ff0163a38fdc4cb4061f0c241e643283a5eaffected · git
    • 6696777c6506fa52b2a0282121195843ed855be6 and later · before 8c1db3418a419e788691746b9c47f863c2fd4890affected · git
    • 6696777c6506fa52b2a0282121195843ed855be6 and later · before feb4866a42ec94764c7eb58012256f6f37664727affected · git
    • 6696777c6506fa52b2a0282121195843ed855be6 and later · before 01e0317c256c560d8dcce2e9825eb6142ee34611affected · git
    • 6696777c6506fa52b2a0282121195843ed855be6 and later · before 6bac57d8fe2a077b8a85b4140eeb7999078158ebaffected · git
    • 6696777c6506fa52b2a0282121195843ed855be6 and later · before df2b818fa009c10ff6ba875a1663ff001cda9558affected · git
    • before 3.19not affected · semver
Affected versions · NVD (7)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel3.19 and later · before 5.10.261
  • linux linux kernel5.11 and later · before 5.15.212
  • linux linux kernel5.16 and later · before 6.1.178
  • linux linux kernel6.2 and later · before 6.6.145
  • linux linux kernel6.7 and later · before 6.12.96
  • linux linux kernel6.13 and later · before 6.18.39
  • linux linux kernel6.19 and later · before 7.1.4

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:12linux-6.12before 6.12.100-1~deb12u16.12.100-1~deb12u1
Debian:13linuxbefore 6.12.96-16.12.96-1
Debian:14linuxbefore 7.1.4-17.1.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-64273Jul 25, 2026 · Input: iforce - bound the device-reported force-feedback effect index
    31Monitor
  • ← EarlierCVE-2026-64274Jul 25, 2026 · Input: goodix - clamp the device-reported contact count
    31Monitor
  • Later →CVE-2026-64276Jul 25, 2026 · Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux01e0317c256c560d8dcce2e9825eb6142ee34611Vendor (CNA)
Linux Linux2f281ff0163a38fdc4cb4061f0c241e643283a5eVendor (CNA)
Linux Linux59d4cc5e7a9785e4bdc9c55273274c6b49d4b58dVendor (CNA)
Linux Linux6bac57d8fe2a077b8a85b4140eeb7999078158ebVendor (CNA)
Linux Linux8c1db3418a419e788691746b9c47f863c2fd4890Vendor (CNA)
Linux Linuxdf2b818fa009c10ff6ba875a1663ff001cda9558Vendor (CNA)
Linux Linuxf6d10af2036d1d4a847a74fe47ebbf93bce3c84cVendor (CNA)
Linux Linuxfeb4866a42ec94764c7eb58012256f6f37664727Vendor (CNA)
azl3 kernel 6.6.144.1-1 on Azure Linux 3.06.6.145.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.100-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-642361 days aparti2c: davinci: fix division by zero on missing clock-frequency
    22Monitor
  • CVE-2026-639316 days apartiio: chemical: scd30: fix division by zero in write_raw
    22Monitor
  • CVE-2026-639336 days apartiio: gyro: adis16260: fix division by zero in write_raw
    22Monitor
  • CVE-2026-639356 days apartiio: adc: nxp-sar-adc: fix division by zero in write_raw
    22Monitor
  • CVE-2026-4616158 days apartmd/raid10: fix divide-by-zero in setup_geo() with zero far_copies
    22Monitor
  • CVE-2026-4618458 days apartsound: ua101: fix division by zero at probe
    22Monitor

Not on record for this CVE: patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-369 · Divide By Zero

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records