7.8
High
CVE-2025-21669 In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: discard packets if the transport…
Description
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
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux 6.13 | earliest → < 6.13 | 6.13 |
| Linux 6.12 | earliest → < 6.12.11 | 6.12.11 |
| Linux 6.6 | earliest → < 6.6.74 | 6.6.74 |
| Linux 6.1 | earliest → < 6.1.127 | 6.1.127 |
| Linux 5.15 | earliest → < 5.15.177 | 5.15.177 |
| Linux 5.10 | earliest → < 5.10.234 | 5.10.234 |
| Linux | 5.5 | No fix stated |
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | Versions not published |
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