CVE-2025-38477high

CVE-2025-38477: fallo de gravedad alta en Linux

net/sched: sch_qfq: Fix race condition on qfq_aggregate

Publicada el 28 jul 2025 · Actualizada el 15 oct 2026

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 7.8epss 0.1%

probabilidad de explotación

0.1%top 97% de las CVE

explotación observada

noninguna fuente lo reporta

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Productos afectados

Linux · Linux

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Referencias