Tracker / CVE-2025-21669
CVE-2025-21669
High 7.8
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: discard packets if the transport changes If the socket has been de-assigned or assigned to another transport, we must discard any packets received because they are not expected and would cause issues when we access vsk->transport. A possible scenario is described by Hyunwoo Kim in the attached link, where after a first connect() interrupted by a signal, and a second connect() failed, we can find `vsk->transport` at NULL, leading to a NULL pointer dereference.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 5.16 → 6.1.127 |
| linux | linux_kernel · 5.5 → 5.15.177 |
| linux | linux_kernel · 6.2 → 6.6.74 |
| linux | linux_kernel · 6.7 → 6.12.11 |
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.