Tracker / CVE-2025-21758
CVE-2025-21758
High 7.8
In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: add RCU protection to mld_newpack() mld_newpack() can be called without RTNL or RCU being held. Note that we no longer can use sock_alloc_send_skb() because ipv6.igmp_sk uses GFP_KERNEL allocations which can sleep. Instead use alloc_skb() and charge the net->ipv6.igmp_sk socket under RCU protection.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 2.6.26 → 5.15.179 |
| linux | linux_kernel · 5.16 → 6.1.129 |
| linux | linux_kernel · 6.13 → 6.13.4 |
| linux | linux_kernel · 6.2 → 6.6.79 |
| linux | linux_kernel · 6.7 → 6.12.16 |
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.