CVE-2024-26593: i2c: i801: Fix block process call transactions

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-02-23 · updated 2026-06-17
Weakness: CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: i801: Fix block process call transactions According to the Intel datasheets, software must reset the block buffer index twice for block process call transactions: once before writing the outgoing data to the buffer, and once again before reading the incoming data from the buffer. The driver is currently missing the second reset, causing the wrong portion of the block buffer to be read.

Affected products

Linux kernel: from 5.3.0 before 5.4.269; from 5.5.0 before 5.10.210; from 5.11.0 before 5.15.149; from 5.16.0 before 6.1.79; from 6.2.0 before 6.6.18; from 6.7.0 before 6.7.6 — fixed in 5.10.210, 5.15.149, 5.4.269, 6.1.79, 6.6.18, 6.7.6

How to fix

Upgrade to a fixed version: Linux kernel 5.10.210, 5.15.149, 5.4.269, 6.1.79. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2024-26593 or the next vulnerability affects your stack