CVE-2026-53079

kernel: net_sched: fix skb memory leak in deferred qdisc drops

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Severity

Moderate

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · June 24, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's networking scheduler (net_sched). When the network stack cleans up deferred packet lists, if the root queueing discipline (qdisc) does not implement the TCQ_F_DEQUEUE_DROPS flag, packets intended for release are not freed. This can lead to a memory leak, potentially resulting in a Denial of Service (DoS) due to resource exhaustion.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-772 · Missing Release of Resource after Effective Lifetime