Tracker / CVE-2025-38552
CVE-2025-38552
Critical 9.4
In the Linux kernel, the following vulnerability has been resolved: mptcp: plug races between subflow fail and subflow creation We have races similar to the one addressed by the previous patch between subflow failing and additional subflow creation. They are just harder to trigger. The solution is similar. Use a separate flag to track the condition 'socket state prevent any additional subflow creation' protected by the fallback lock. The socket fallback makes such flag true, and also receiving or sending an MP_FAIL option. The field 'allow_infinite_fallback' is now always touched under the relevant lock, we can drop the ONCE annotation on write.
Affected products and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel |
| linux | linux_kernel · 5.15 → 6.1.149 |
| linux | linux_kernel · 6.13 → 6.15.8 |
| linux | linux_kernel · 6.2 → 6.6.101 |
| linux | linux_kernel · 6.7 → 6.12.40 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.