Linux Kernel up to 7.0.11 Nxp Sar Adc write_raw sampling_frequency divide by zero

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.60

Summaryinfo

A vulnerability was found in Linux Kernel up to 7.0.11. It has been declared as critical. Affected is the function write_raw of the component Nxp Sar Adc. Such manipulation of the argument sampling_frequency leads to divide by zero. This vulnerability is documented as CVE-2026-63935. The attack needs to be performed locally. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.0.11. It has been rated as critical. Affected by this issue is the function write_raw of the component Nxp Sar Adc. The manipulation of the argument sampling_frequency with an unknown input leads to a divide by zero vulnerability. Using CWE to declare the problem leads to CWE-369. The product divides a value by zero. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: iio: adc: nxp-sar-adc: fix division by zero in write_raw Add a validation check for the sampling frequency value before using it as a divisor. A user writing zero or a negative value to the sampling_frequency sysfs attribute triggers a division by zero in the kernel. Also prevent unsigned integer underflow when the computed cycle count is smaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to a huge value.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-63935 since 07/19/2026. The exploitation is known to be easy. The attack needs to be approached locally. The exploitation needs additional levels of successful authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 7.0.12 eliminates this vulnerability.

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Productinfo

Type

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.7
VulDB Temp Score: 7.4
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: Partially

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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 7.0.12

Timelineinfo

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

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-63935 (🔒)
GCVE (CVE): GCVE-0-2026-63935
GCVE (VulDB): GCVE-100-380456

Entryinfo

Created: 07/19/2026 20:39
Changes: 07/19/2026 20:39 (56)
Complete: 🔍
Cache ID: 216::103

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