Tracker / CVE-2025-38588
CVE-2025-38588
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent infinite loop in rt6_nlmsg_size() While testing prior patch, I was able to trigger an infinite loop in rt6_nlmsg_size() in the following place: list_for_each_entry_rcu(sibling, &f6i->fib6_siblings, fib6_siblings) { rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len); } This is because fib6_del_route() and fib6_add_rt2node() uses list_del_rcu(), which can confuse rcu readers, because they might no longer see the head of the list. Restart the loop if f6i->fib6_nsiblings is zero.
Affected products and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel · 6.1.128 → 6.1.148 |
| linux | linux_kernel · 6.11.11 → 6.12 |
| linux | linux_kernel · 6.12.2 → 6.12.42 |
| linux | linux_kernel · 6.13 → 6.15.10 |
| linux | linux_kernel · 6.16 → 6.16.1 |
| linux | linux_kernel · 6.6.75 → 6.6.102 |
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.