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CVE-2025-38177

In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: make hfsc_qlen_notify() idempotent hfsc_qlen_notify() is not idempotent either and not friendly to its callers, like fq_codel_dequeue(). Let's make it idempotent to ease qdisc_tree_reduce_backlog() callers' life: 1. update_vf() decreases cl->cl_nactive, so we can check whether it is non-zero before calling it. 2. eltree_remove() always removes RB node cl->el_node, but we can use RB_EMPTY_NODE() + RB_CLEAR_NODE() to make it safe.

Published

2025-07-04T13:15:24.033

Last Modified

2025-07-08T16:18:53.607

Status

Awaiting Analysis

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Severity

-

Weaknesses

-

Affected Vendors & Products

-

References