CVE-2024-36974

Published: June 20, 2024Last modified: June 20, 2024

Description

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.

Status

References

• https://git.kernel.org/stable/c/0bf6cc96612bd396048f57d63f1ad454a846e39c
• https://git.kernel.org/stable/c/6db4af09987cc5d5f0136bd46148b0e0460dae5b
• https://git.kernel.org/stable/c/724050ae4b76e4fae05a923cb54101d792cf4404
• https://git.kernel.org/stable/c/c37a27a35eadb59286c9092c49c241270c802ae2
• https://git.kernel.org/stable/c/c6041e7124464ce7e896ee3f912897ce88a0c4ec
• https://git.kernel.org/stable/c/d3dde4c217f0c31ab0621912e682b57e677dd923
• https://git.kernel.org/stable/c/f921a58ae20852d188f70842431ce6519c4fdc36