Tracker / CVE-2025-37914
CVE-2025-37914
High 7.8
In the Linux kernel, the following vulnerability has been resolved: net_sched: ets: Fix double list add in class with netem as child qdisc As described in Gerrard's report [1], there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of ets, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption. In addition to checking for qlen being zero, this patch checks whether the class was already added to the active_list (cl_is_active) before doing the addition to cater for the reentrant case. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/
Affected products and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel |
| linux | linux_kernel · 5.11 → 5.15.182 |
| linux | linux_kernel · 5.16 → 6.1.138 |
| linux | linux_kernel · 5.6 → 5.10.238 |
| linux | linux_kernel · 6.13 → 6.14.6 |
| linux | linux_kernel · 6.2 → 6.6.90 |
| linux | linux_kernel · 6.7 → 6.12.28 |
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.