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Change History

kernel.org https://git.kernel.org/stable/c/0bf6cc96612bd396048f57d63f1ad454a846e39c [No types assigned]

kernel.org https://git.kernel.org/stable/c/724050ae4b76e4fae05a923cb54101d792cf4404 [No types assigned]

kernel.org https://git.kernel.org/stable/c/c37a27a35eadb59286c9092c49c241270c802ae2 [No types assigned]

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

kernel.org https://git.kernel.org/stable/c/f921a58ae20852d188f70842431ce6519c4fdc36 [No types assigned]