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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= fbfab1ab065879370541caf0e514987368eb41b2, < cbec4406998185e0311ae97dfacc649f9cd79b0b; >= fbfab1ab065879370541caf0e514987368eb41b2, < acfa2948be630ad857535cb36153697f3cbf9ca9; >= fbfab1ab065879370541caf0e514987368eb41b2, < d05ec13aa3eb868a60dc961b489053a643863ddc; >= fbfab1ab065879370541caf0e514987368eb41b2, < c523bfba46c4b4d7676fb050909533a766698ecd; >= fbfab1ab065879370541caf0e514987368eb41b2, < 0d33913fce67a93c1eb83396c3c9d6b411dcab33; >= fbfab1ab065879370541caf0e514987368eb41b2, < 42c4471b30fa203249f476dd42321cd7efb7f6a8; >= fbfab1ab065879370541caf0e514987368eb41b2, < 89459f168b78e5c801dc8b7ad037b62898bc4f57; >= fbfab1ab065879370541caf0e514987368eb41b2, < a7982a14b3012527a9583d12525cd0dc9f8d8934 |
| Linux | Linux | 4.17 |
References
- https://git.kernel.org/stable/c/0d33913fce67a93c1eb83396c3c9d6b411dcab33Patch
- https://git.kernel.org/stable/c/42c4471b30fa203249f476dd42321cd7efb7f6a8Patch
- https://git.kernel.org/stable/c/89459f168b78e5c801dc8b7ad037b62898bc4f57Patch
- https://git.kernel.org/stable/c/a7982a14b3012527a9583d12525cd0dc9f8d8934Patch
- https://git.kernel.org/stable/c/acfa2948be630ad857535cb36153697f3cbf9ca9Patch
- https://git.kernel.org/stable/c/c523bfba46c4b4d7676fb050909533a766698ecdPatch
- https://git.kernel.org/stable/c/cbec4406998185e0311ae97dfacc649f9cd79b0bPatch
- https://git.kernel.org/stable/c/d05ec13aa3eb868a60dc961b489053a643863ddcPatch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Timeline
- Published
- Aug 22, 2025
- Last modified
- Nov 5, 2026
- NVD status
- Analyzed