PT-2026-40683 · Linux · Linux Kernel

Published 2026-05-13 · Updated 2026-05-26 · CVE-2026-43476

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the sps30 i2c read meas() function within the iio: chemical: sps30 i2c component. The sizeof(num) expression incorrectly evaluates to the size of size t (8 bytes on 64-bit systems) rather than the intended be32 element size (4 bytes). This results in an incorrect buffer size calculation.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-43476

Affected Products

Linux Kernel

References · 20

• https://nvd.nist.gov/vuln/detail/CVE-2026-43476 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-43476 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-43476 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-43476 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43476 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43476 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43476 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43476 · Vendor Advisory
• https://git.kernel.org/stable/c/9aff2e9c2927ecd9652872a43a0725f101128104 · Note
• https://git.kernel.org/stable/c/216345f98cae7fcc84f49728c67478ac00321c87 · Note
• https://docs.bell-sw.com/security/cves/CVE-2026-43476 · Note
• https://git.kernel.org/stable/c/165f12b40901c6a7aca15796da239726ddcdc5ad · Note
• https://twitter.com/hetmehtaa/status/2055151398283837677 · Twitter Post
• https://git.kernel.org/stable/c/2a4d111a6a34afb8bb4f118009e7728ed2ec7e10 · Note
• https://git.kernel.org/linus/216345f98cae7fcc84f49728c67478ac00321c87 · Note