Fixed
Created: May 26, 2025
Updated: Jun 8, 2025
Resolved Date: Jun 5, 2025
Found In Version: 10.24.33.1
Fix Version: 10.24.33.10
Severity: Standard
Applicable for: Wind River Linux LTS 24
Component/s: Kernel
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.
CREATE(Triage):(User=admin) CVE-2025-37992 (https://nvd.nist.gov/vuln/detail/CVE-2025-37992)
