Tracker / CVE-2025-37992
CVE-2025-37992
Medium 5.5
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.
Affected products and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel |
| 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 · 6.13 → 6.14.8 |
| linux | linux_kernel · 6.2 → 6.6.92 |
| linux | linux_kernel · 6.7 → 6.12.30 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.