CVE-2026-43005: Linux Kernel

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: hwmon: (tps53679) Fix array access with zero-length block read i2c_smbus_read_block_data() can return 0, indicating a zero-length read. When this happens, tps53679_identify_chip() accesses buf[ret - 1] which is buf[-1], reading one byte before the buffer on the stack. Fix by changing the check from "ret < 0" to "ret <= 0", treating a zero-length read as an error (-EIO), which prevents the out-of-bounds array access. Also fix a typo in the adjacent comment: "if present" instead of duplicate "if".

Affected products

• Linux Linux Kernel: from 6.17.1, before 6.18.22 (fixed in 6.18.22); from 6.19, before 6.19.12 (fixed in 6.19.12); version 6.17 only; version 7.0 only

Published 2026-05-01. Last modified 2026-06-17.