VYPR
Medium severity4.7NVD Advisory· Published Jul 28, 2025· Updated May 12, 2026

CVE-2025-38477

CVE-2025-38477

Description

In the Linux kernel, the following vulnerability has been resolved:

net/sched: sch_qfq: Fix race condition on qfq_aggregate

A race condition can occur when 'agg' is modified in qfq_change_agg (called during qfq_enqueue) while other threads access it concurrently. For example, qfq_dump_class may trigger a NULL dereference, and qfq_delete_class may cause a use-after-free.

This patch addresses the issue by:

  1. Moved qfq_destroy_class into the critical section.

2. Added sch_tree_lock protection to qfq_dump_class and qfq_dump_class_stats.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

369

Patches

Vulnerability mechanics

References

11

News mentions

0

No linked articles in our index yet.