CVE-2025-38671

MEDIUM

MEDIUM Priority: 0.01 BB Relevance: 36/100

Published: 2025-08-22 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local

AC: Low

PR: Low

UI: None

S: Unchanged

C: None

I: None

A: High

Description

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 Software (18)

Vendor	Product	Version
Linux	Linux	fbfab1ab065879370541caf0e514987368eb41b2 < cbec4406998185e0311ae97dfacc649f9cd79b0b
Linux	Linux	fbfab1ab065879370541caf0e514987368eb41b2 < acfa2948be630ad857535cb36153697f3cbf9ca9
Linux	Linux	fbfab1ab065879370541caf0e514987368eb41b2 < d05ec13aa3eb868a60dc961b489053a643863ddc
Linux	Linux	fbfab1ab065879370541caf0e514987368eb41b2 < c523bfba46c4b4d7676fb050909533a766698ecd
Linux	Linux	fbfab1ab065879370541caf0e514987368eb41b2 < 0d33913fce67a93c1eb83396c3c9d6b411dcab33
Linux	Linux	fbfab1ab065879370541caf0e514987368eb41b2 < 42c4471b30fa203249f476dd42321cd7efb7f6a8
Linux	Linux	fbfab1ab065879370541caf0e514987368eb41b2 < 89459f168b78e5c801dc8b7ad037b62898bc4f57
Linux	Linux	fbfab1ab065879370541caf0e514987368eb41b2 < a7982a14b3012527a9583d12525cd0dc9f8d8934
Linux	Linux	4.17
debian	debian_linux	11.0
linux	linux_kernel	4.17 – 5.4.297
linux	linux_kernel	6.16
linux	linux_kernel	6.16
linux	linux_kernel	6.16
linux	linux_kernel	6.16
linux	linux_kernel	6.16
linux	linux_kernel	6.16
linux	linux_kernel	6.16