High · published February 26, 2025
In the Linux kernel, the following vulnerability has been resolved:
net: tun: unlink NAPI from device on destruction
Syzbot found a race between tun file and device destruction.
NAPIs live in struct tun_file which can get destroyed before
the netdev so we have to del them explicitly. The current
code is missing deleting the NAPI if the queue was detached
first.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 4.15, < 4.19.251 | 4.19.251 |
| linux/linux_kernel | ≥ 4.20, < 5.4.204 | 5.4.204 |
| linux/linux_kernel | ≥ 5.5, < 5.10.129 | 5.10.129 |
| linux/linux_kernel | ≥ 5.11, < 5.15.53 | 5.15.53 |
| linux/linux_kernel | ≥ 5.16, < 5.18.10 | 5.18.10 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |