CVE-2025-37992

In the Linux kernel, the following vulnerability has been resolved: net_sched: Flush gso_skb list too during ->change() Previously, when reducing a qdisc's limit via the ->change() operation, only the main skb queue was trimmed, potentially leaving packets in the gso_skb list. This could result in NULL pointer dereference when we only check sch->limit against sch->q.qlen. This patch introduces a new helper, qdisc_dequeue_internal(), which ensures both the gso_skb list and the main queue are properly flushed when trimming excess packets. All relevant qdiscs (codel, fq, fq_codel, fq_pie, hhf, pie) are updated to use this helper in their ->change() routines.

• linux linux kernel (>= 3.5 < 5.10.238) • linux linux kernel (>= 5.11 < 5.15.184) • linux linux kernel (>= 5.16 < 6.1.140) • linux linux kernel (>= 6.2 < 6.6.92) • linux linux kernel (>= 6.7 < 6.12.30) • linux linux kernel (>= 6.13 < 6.14.8) • linux linux kernel 6.15 • debian debian linux 11.0