High · published February 4, 2026
In the Linux kernel, the following vulnerability has been resolved:
net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag
This is more of a preventive patch to make the code more consistent and
to prevent possible exploits that employ child qlen manipulations on qfq.
use cl_is_active instead of relying on the child qdisc's qlen to determine
class activation.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 3.8, < 5.10.249 | 5.10.249 |
| linux/linux_kernel | ≥ 5.11, < 5.15.199 | 5.15.199 |
| linux/linux_kernel | ≥ 5.16, < 6.1.162 | 6.1.162 |
| linux/linux_kernel | ≥ 6.2, < 6.6.122 | 6.6.122 |
| linux/linux_kernel | ≥ 6.7, < 6.12.68 | 6.12.68 |
| linux/linux_kernel | ≥ 6.13, < 6.18.8 | 6.18.8 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |