CVE-2026-43476

Kernel memory corruption via oversized measurement buffer

Published May 13, 2026 · Updated May 13, 2026

Out-of-bounds write in the SPS30 I2C driver in affected Linux Kernel releases allows local users to corrupt kernel memory. On 64-bit systems, sps30_i2c_read_meas() multiplies the element count by sizeof(size_t) rather than sizeof(__be32), passing twice the destination array's capacity to sps30_i2c_command(). The vulnerable driver must be active with an SPS30 sensor and a measurement read must occur; excess sensor data can expose data, alter execution, or crash the system.

CVSS severity7.8
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the SPS30 I2C driver in affected Linux Kernel releases allows local users to corrupt kernel memory. On 64-bit systems, sps30_i2c_read_meas() multiplies the element count by sizeof(size_t) rather than sizeof(__be32), passing twice the destination array's capacity to sps30_i2c_command(). The vulnerable driver must be active with an SPS30 sensor and a measurement read must occur; excess sensor data can expose data, alter execution, or crash the system.

The record

CVE
CVE-2026-43476
Published
May 13, 2026
Updated
May 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.14
  2. Affected versionversion=8f3f130852785dac0759843835ca97c3bacc2b10 <08881d82f94deaa51800360029908863e5c4c39d
  3. Affected versionversion=8f3f130852785dac0759843835ca97c3bacc2b10 <165f12b40901c6a7aca15796da239726ddcdc5ad
  4. Affected versionversion=8f3f130852785dac0759843835ca97c3bacc2b10 <216345f98cae7fcc84f49728c67478ac00321c87
  5. Affected versionversion=8f3f130852785dac0759843835ca97c3bacc2b10 <2a4d111a6a34afb8bb4f118009e7728ed2ec7e10
  6. Affected versionversion=8f3f130852785dac0759843835ca97c3bacc2b10 <90e978ace598567e6e30de79805bddf37cf892ac
  7. Affected versionversion=8f3f130852785dac0759843835ca97c3bacc2b10 <9aff2e9c2927ecd9652872a43a0725f101128104
  8. Affected versionversion=8f3f130852785dac0759843835ca97c3bacc2b10 <dcdf1e92674efb6692f4ebe189e0aa9fde23a541

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.14; version=8f3f130852785dac0759843835ca97c3bacc2b10 <08881d82f94deaa51800360029908863e5c4c39d; version=8f3f130852785dac0759843835ca97c3bacc2b10 <165f12b40901c6a7aca15796da239726ddcdc5ad; version=8f3f130852785dac0759843835ca97c3bacc2b10 <216345f98cae7fcc84f49728c67478ac00321c87; version=8f3f130852785dac0759843835ca97c3bacc2b10 <2a4d111a6a34afb8bb4f118009e7728ed2ec7e10; version=8f3f130852785dac0759843835ca97c3bacc2b10 <90e978ace598567e6e30de79805bddf37cf892ac; version=8f3f130852785dac0759843835ca97c3bacc2b10 <9aff2e9c2927ecd9652872a43a0725f101128104; version=8f3f130852785dac0759843835ca97c3bacc2b10 <dcdf1e92674efb6692f4ebe189e0aa9fde23a541

Published CVSS scores

7.8Linux kernel CVE teamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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