High · published June 19, 2024
In the Linux kernel, the following vulnerability has been resolved:
net/sched: taprio: always validate TCA_TAPRIO_ATTR_PRIOMAP
If one TCA_TAPRIO_ATTR_PRIOMAP attribute has been provided,
taprio_parse_mqprio_opt() must validate it, or userspace
can inject arbitrary data to the kernel, the second time
taprio_change() is called.
First call (with valid attributes) sets dev->num_tc
to a non zero value.
Second call (with arbitrary mqprio attributes)
returns early from taprio_parse_mqprio_opt()
and bad things can happen.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.2, < 5.4.279 | 5.4.279 |
| linux/linux_kernel | ≥ 5.5, < 5.10.221 | 5.10.221 |
| linux/linux_kernel | ≥ 5.11, < 5.15.162 | 5.15.162 |
| linux/linux_kernel | ≥ 5.16, < 6.1.95 | 6.1.95 |
| linux/linux_kernel | ≥ 6.2, < 6.6.35 | 6.6.35 |
| linux/linux_kernel | ≥ 6.7, < 6.9.6 | 6.9.6 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |