CVE-2025-38671
MEDIUMLinux Kernel 4.17-6.15.9 - Denial of Service via I2C QUP Timeout Bypass
Title source: llmDescription
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.
References (10)
Core 10
Core References
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Scores
CVSS v3
5.5
EPSS
0.0003
EPSS Percentile
8.8%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
Status
published
Products (28)
debian/debian_linux
11.0
linux/Kernel
4.17.0 - 5.4.297linux
linux/Kernel
5.11.0 - 5.15.190linux
linux/Kernel
5.16.0 - 6.1.148linux
linux/Kernel
5.5.0 - 5.10.241linux
linux/Kernel
6.13.0 - 6.15.9linux
linux/Kernel
6.2.0 - 6.6.101linux
linux/Kernel
6.7.0 - 6.12.41linux
Linux/Linux
< 4.17
Linux/Linux
4.17
... and 18 more
Published
Aug 22, 2025
Tracked Since
Feb 18, 2026