CVE-2025-38671: Debian Linux

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: i2c: qup: jump out of the loop in case of timeout Original logic only sets the return value but doesn't jump out of the loop if the bus is kept active by a client. This is not expected. A malicious or buggy i2c client can hang the kernel in this case and should be avoided. This is observed during a long time test with a PCA953x GPIO extender. Fix it by changing the logic to not only sets the return value, but also jumps out of the loop and return to the caller with -ETIMEDOUT.

Affected products

• Debian Debian Linux: version 11.0 only
• Linux Linux Kernel: from 4.17, before 5.4.297 (fixed in 5.4.297); from 5.5, before 5.10.241 (fixed in 5.10.241); from 5.11, before 5.15.190 (fixed in 5.15.190); from 5.16, before 6.1.148 (fixed in 6.1.148); from 6.2, before 6.6.101 (fixed in 6.6.101); from 6.7, before 6.12.41 (fixed in 6.12.41); …

Published 2025-08-22. Last modified 2026-06-17.