CVE-2026-98017

In the Linux kernel, the following vulnerability has been resolved: net/sched: defer qdisc freeing after failed creation An RTM_NEWQDISC request can make clsact bind a populated shared ingress block during ->init(), publishing an embedded mini_Qdisc to lockless readers. If the same request has an invalid TCA_RATE, estimator setup fails after ->init(); the unwind removes the pointer but synchronously frees its containing qdisc while tc_run() may still hold it. Retire failed qdiscs through the same RCU helper as normal destruction. Inline the synchronous free into the callback now that no direct callers remain.

• https://git.kernel.org/stable/c/156a3bab69744e9225bb9eff8c5cc53da18d5a2e
• https://git.kernel.org/stable/c/20bf6fa34b345333971bd4464a322cce87b83f4e
• https://git.kernel.org/stable/c/5bfe927c5b4b290fad529186218c728589b4b101
• https://git.kernel.org/stable/c/e6662f2100f8d33b0f4d0047c219efd6bba186ea